Find the mean proportional between 20 and 36. MCQ with Answer and Explanation

Question Report Error

Find the mean proportional between 20 and 36.

A. 29

B. 26

C. 52

D. 56

Answer: Option B

Solution (By JKExamLibrary)

Mean proportional = √(20 × 36) = √(720) = 26.

This question belongs to: Maths Ratio and Proportion

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Ratio and Proportion Questions

Question #1 Report Error

If a:b = 7:6 and b:c = 6:5, then a:b:c = ?

A. 7:6:5

B. 6:6:6

C. 7:7:5

D. 14:12:10

View Answer & Solution Discuss

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 7:6, b:c = 6:5 ⇒ a:b:c = 7:6:5.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

Two numbers are in the ratio 12:9 and their sum is 569. Find the numbers.

A. 648 and 486

B. 324 and 243

C. 317 and 258

D. 341 and 215

View Answer & Solution Discuss

Correct Answer: Option B

Explanation:
Numbers = 12k and 9k. 12k + 9k = 569 ⇒ k = 27. Thus, numbers are 324 and 243.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

If a:b = 2:9 and b:c = 9:7, then a:b:c = ?

A. 2:9:7

B. 2:10:7

C. 4:18:14

D. 1:9:8

View Answer & Solution Discuss

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 2:9, b:c = 9:7 ⇒ a:b:c = 2:9:7.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs