Mathematics
The mean proportion between x and y is 6. The third proportional to x and y is 48. Then x : y equals :
1 : 3
1 : 4
1 : 6
1 : 9
Related Questions
The mean proportion between 0.02 and 0.32 is :
0.08
0.16
0.3
0.34
The ratio between the third proportional to 12 and 30 and mean proportion of 9 and 25, is :
2 : 1
5 : 1
7 : 15
9 : 14
When 30% of one number is subtracted from another number, the second number reduces to its four-fifths. What is the ratio of the first to the second number?
2 : 5
2 : 3
4 : 7
cannot be determined