HomeTestsSearchRankProfile
mediumMCQCompetitive Exam2026Quantitative Aptitude
1 mark

The third proportional of 5 and 15 is:

  1. A
    35
  2. B
    40
  3. C
    50
  4. D
    45

Solution & Step-by-step Explanation

Let the third proportional of a and b be x. The relationship is defined as:
b
a
​
=
x
b
​
⟹x=
a
b
2

​

Given a=5 and b=15:

x=
5
15×15
​
=3×15=45

Practice this question

Try it yourself before checking the explanation above.

The third proportional of 5 and 15 is:
A
35
B
40
C
50
D
45

Share This Question

Ratio and ProportionThird Proportional

Related Questions

easyMCQ

Which one of the following statements is true?

easyMCQ

Which of the following statements is not correct?

easyMCQ

Which one of the following statements is correct?

easyMCQ

The product formed by the reaction of an aldehyde with a primary amine is:

easyMCQ

Which part of the tobacco plant is infected by Meloidogyne incognita?

easyMCQ

The term ecosystem was coined by:

Ready for a Full Test?

Practice with timed mock tests and track your performance across Quantitative Aptitude.

Browse TestsLeaderboard

Discussion