The mean proportional between 234 and 104 is · ABC26GN3037

Subject: General Aptitude · Chapter: Ratio and Proportion

The mean proportional between 234 and 104 is

(a)12

(b)39

(c)54

(d)None of these

Answer

Answer (as printed): D

Explanation

Required mean proportional $=\sqrt{234 \times 104}$ $$=\sqrt{13 \times 9 \times 2 \times 13 \times 8}=13 \times 3 \times 4=156 .$$

Explanation as extracted from the printed page; notation may be imperfect.

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