Question 917824
If the length, width and height of a hall are in the ratio 6 : 1 : 9,
then that hall is 9 times as tall as it is wide. A 6 : 1 : 0.9 ratio makes more sense.
 
If the length, width and height of a hall are in the ratio 6 : 1 : 0.9,

width and height are in the ratio 1 : 0.9, meaning
{{{width/height=1/0.9}}} .
In this case,
{{{7meters/height=1/0.9}}}--->{{{(7meters)*0.9=1*height}}}-->{{{highlight(height=6.3meters)}}}