SSC Delhi Police MTS (Civilian) Mock Test Series Quantitative Aptitude Ratio and Proportion Mean Proportional
When 'x' is subtracted from each of 22, 38, 31 and 55, the numbers so obtained in this order are in proportion. What is the mean proportional between (x + 5) and (3x - 2)?
1
\(4\sqrt {11} \)
2
\(2\sqrt {7} \)
3
\(2\sqrt {14} \)
4
\(3\sqrt {10} \)