Find the mean proportional between 14 and 40. MCQ with Answer and Explanation

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Find the mean proportional between 14 and 40.

A. 26

B. 23

C. 54

D. 46

Answer: Option B

Solution (By JKSSB Mock Tests)

Mean proportional = √(14 × 40) = √(560) = 23.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 5:3 and b:c = 3:4, then a:b:c = ?

A. 10:6:8

B. 5:3:4

C. 5:4:4

D. 4:3:5

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:3, b:c = 3:4 ⇒ a:b:c = 5:3:4.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 4:6 and b:c = 6:8, then a:b:c = ?

A. 4:7:8

B. 8:12:16

C. 3:6:9

D. 4:6:8

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 4:6, b:c = 6:8 ⇒ a:b:c = 4:6:8.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 3:3 and b:c = 3:5, then a:b:c = ?

A. 3:4:5

B. 2:3:6

C. 3:3:5

D. 6:6:10

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:3, b:c = 3:5 ⇒ a:b:c = 3:3:5.

This question belongs to: Maths Ratio and Proportion

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