Out of the 32 students in Mr. Martin's class, 18 are boys. If this ratio is proportional to the ratio of students in the school and the number of boys in the school, which of the following proportions would best be used to find the number of students in the school? It is given that there are 468 boys in the school.
Let x be the total number of students in the school.
The proportion can be set up as follows:
18 boys in Mr. Martin's class / 32 students in Mr. Martin's class = 468 boys in the school / x students in the school
Solving for x:
18/32 = 468/x
Cross multiplying:
18x = 32 * 468
18x = 14976
x = 14976 / 18
x = 832
Therefore, the number of students in the school is 832.