Question

Find thefourth proportion of 4hour 40minutes, 1hour 10minutes and 16hour in icse

Answer 1

let the fourth proportion be 'x'
therefore 4hour 40min : 1hour 10min :: 16hours :x
=280:70::16*60:x
solving this we get x= 240 that means 4hour.
therefore fourth proportion is 4hours