Read the question. Practice using the bar model to solve the proportional relationship. Then choose from three different methods to solve the problem to find the answer.
At a school dance, the ratio of the boys to girls is 8:11. If there are 328 boys at the dance, how many girls are there?
At a school dance, the ratio of boys to girls 1:2. If there are 6 girls at the dance, how many boys are there?
At a school dance, the ratio of boys to girls 2:3. If there are 74 boys at the dance, how many are there?
At a school dance, the ratio of boys to girls is 1:5. If there are 240 students in total at the dance, how many girls are there?
At a school dance, the ratio of boys to girls is 7:8. If there are 272 girls at the dance, how many boys are there?