WBCS.LIVE practice question

If the product of three positive continued proportional numbers is 343. Then what is the median proportional of the first and third?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 7
  2. 13
  3. 11
  4. 9

Correct answer and explanation

Correct answer: 7

Explanation: āœ… Correct Answer: A. 7 šŸ“š Explanation: Let the three numbers be x, y, and z. In continued proportion, y squared equals x multiplied by z. The total product is x * y * z = 343. Substituting xz with y squared, we get y multiplied by y squared = y cubed = 343. The cube root of 343 is 7, so the median proportional is 7.