Find the mean proportional between 20 and 74. MCQ with Answer and Explanation

Question

Share Report Error

Find the mean proportional between 20 and 74.

A. 41

B. 38

C. 94

D. 76

Answer: Option B

Solution (By JKSSB Mock Tests)

Mean proportional = √(20 × 74) = √(1480) = 38.

This question belongs to: Maths Ratio and Proportion

Request complete Subject PDF

Discuss this Question (0)

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

Practice More Ratio and Proportion Questions

Question #1

If a:b = 6:9 and b:c = 9:4, then a:b:c = ?

A. 6:10:4

B. 6:9:4

C. 12:18:8

D. 5:9:5

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Combine ratios: a:b = 6:9, b:c = 9:4 ⇒ a:b:c = 6:9:4.

This question belongs to: Maths Ratio and Proportion

Question #2

Find the mean proportional between 18 and 55.

A. 73

B. 31

C. 62

D. 34

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Mean proportional = √(18 × 55) = √(990) = 31.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 4:8 and b:c = 8:7, then a:b:c = ?

A. 4:9:7

B. 3:8:8

C. 8:16:14

D. 4:8:7

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 4:8, b:c = 8:7 ⇒ a:b:c = 4:8:7.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs