Find the fourth proportion for 15, 55 and 81.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 297.
Calculations:
Let the fourth proportion be d
According to the question;
⇒ 15/55 = 81/d
⇒ d = 81 × 55/15 = 27 × 11 = 297