Calculate the fourth proportional to 5.2, 6.6 and 9.1?  Options.
A) 19.55 B) 10.55 C) 11.55 D) 10.2 E) 12.5
Explanation:   Formula = Fourth propotional = (b × c)/a   A = 5.2 , B = 6.6 and 11.55 = 9.1   (6.6 × 9.1)/5.2 = 11.55   Answer: Option 11.55
<result>C</result>
Calculate the fourth proportional to 5.2, 6.6 and 9.1?