Calculate the 3rd Proportional to 15 and 30.

  1. 55
  2. 15
  3. 65
  4. 60
kailashkumar Default Asked on 25th July 2015 in Maths.
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    Answer: (4) 60
    Explanation:-
    Let be the third proportion is X
    Then, 15 : 30 :: 30 : X
    Or,
    15/30 = 30/X
    X = 30 x 30/15
    X = 60
    Hence, the third proportion is 60.

    Anurag Mishra Professor Answered on 25th July 2015.
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