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Ratio and Proportion,  
Indices and Logarithm 
Paper 4: Quantitative Aptitude- Mathematics Chapter 1 
Part II: Proportion 
 
Ms. Ritu Gupta, MA (Maths.) 
Page 2


Ratio and Proportion,  
Indices and Logarithm 
Paper 4: Quantitative Aptitude- Mathematics Chapter 1 
Part II: Proportion 
 
Ms. Ritu Gupta, MA (Maths.) 
Learning Objectives 
What is 
proportion  
Properties of 
Proportion 
and its 
application 
2 
Page 3


Ratio and Proportion,  
Indices and Logarithm 
Paper 4: Quantitative Aptitude- Mathematics Chapter 1 
Part II: Proportion 
 
Ms. Ritu Gupta, MA (Maths.) 
Learning Objectives 
What is 
proportion  
Properties of 
Proportion 
and its 
application 
2 
Proportion  
• An equality of two ratio is called a proportion / Four 
quantities a, b, c, d are said to in the proportion if a : b = c : d 
(also written as a : b :: c : d) i.e. a/b = c/d i.e. if ad = bc. 
• The term a and d are called extremes, the term b and c are 
called the means. The fourth term d is called the fourth 
proportional of a, b and c taken in order. 
• If a:b :: b:c, then a, b, c are called in continued proportion, b 
is called the mean proportional between a and c and c is 
called the third proportional of a and b.  
3 
Page 4


Ratio and Proportion,  
Indices and Logarithm 
Paper 4: Quantitative Aptitude- Mathematics Chapter 1 
Part II: Proportion 
 
Ms. Ritu Gupta, MA (Maths.) 
Learning Objectives 
What is 
proportion  
Properties of 
Proportion 
and its 
application 
2 
Proportion  
• An equality of two ratio is called a proportion / Four 
quantities a, b, c, d are said to in the proportion if a : b = c : d 
(also written as a : b :: c : d) i.e. a/b = c/d i.e. if ad = bc. 
• The term a and d are called extremes, the term b and c are 
called the means. The fourth term d is called the fourth 
proportional of a, b and c taken in order. 
• If a:b :: b:c, then a, b, c are called in continued proportion, b 
is called the mean proportional between a and c and c is 
called the third proportional of a and b.  
3 
Properties  - Cross-multiplication 
4 
Page 5


Ratio and Proportion,  
Indices and Logarithm 
Paper 4: Quantitative Aptitude- Mathematics Chapter 1 
Part II: Proportion 
 
Ms. Ritu Gupta, MA (Maths.) 
Learning Objectives 
What is 
proportion  
Properties of 
Proportion 
and its 
application 
2 
Proportion  
• An equality of two ratio is called a proportion / Four 
quantities a, b, c, d are said to in the proportion if a : b = c : d 
(also written as a : b :: c : d) i.e. a/b = c/d i.e. if ad = bc. 
• The term a and d are called extremes, the term b and c are 
called the means. The fourth term d is called the fourth 
proportional of a, b and c taken in order. 
• If a:b :: b:c, then a, b, c are called in continued proportion, b 
is called the mean proportional between a and c and c is 
called the third proportional of a and b.  
3 
Properties  - Cross-multiplication 
4 
Properties - Invertendo 
5 
Read More
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FAQs on PPT - Proportions - Quantitative Aptitude for CA Foundation

1. What are proportions in the CA Foundation exam?
Ans. Proportions are a mathematical concept that is tested in the CA Foundation exam. It refers to the comparison of two ratios or fractions to determine their equality or inequality. The knowledge of proportions is essential for solving questions related to percentages, profit and loss, and discount.
2. How important are proportions in the CA Foundation exam?
Ans. Proportions are an essential topic in the CA Foundation exam as they form the basis for many other concepts such as percentages, profit and loss, and discount. Questions related to proportions are frequently asked in the exam. Therefore, it is crucial to have a thorough understanding of the concept.
3. How can I prepare for the proportion section in the CA Foundation exam?
Ans. To prepare for the proportion section in the CA Foundation exam, you must understand the basics of the concept. Make sure you have a clear understanding of the formulas and their applications. Practice solving different types of questions from previous year papers, sample papers, and mock tests. Also, revise regularly to avoid forgetting the concepts.
4. What are some common mistakes to avoid while solving proportion questions in the CA Foundation exam?
Ans. While solving proportion questions in the CA Foundation exam, some common mistakes to avoid are incorrect calculations, not simplifying the fractions, and misinterpreting the question. Make sure to read the question carefully and understand what is being asked. Also, double-check your calculations to avoid making silly errors.
5. Can I use a calculator while solving proportion questions in the CA Foundation exam?
Ans. No, the use of a calculator is not allowed in the CA Foundation exam. Therefore, it is crucial to develop quick mental calculation skills while solving proportion questions. Practice mental calculations regularly to improve your speed and accuracy.
146 videos|175 docs|99 tests
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Up next

MCQ - Proportions
Doc | 31 pages
Rules of Logarithm
Video | 04:31 min
PPT - Ratio
Doc | 19 pages
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