Proportion Problems Review

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. It can be written in the form a/b = c/d.

Front

How do you find a percentage of a number?

Back

To find a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 24% of 165, calculate 165 * 0.24 = 39.6.

Front

What is the scale of a map?

Back

The scale of a map shows the relationship between distances on the map and actual distances in the real world. For example, a scale of 1 cm = 50 miles means that 1 cm on the map represents 50 miles in reality.

Front

How do you set up a proportion to solve for an unknown?

Back

Front

What is the formula to find the total number of students from a percentage?

Back

To find the total number of students from a percentage, use the formula: Total = (Part / Percentage) * 100. For example, if 294 students represent 75%, then Total = (294 / 75) * 100 = 392.

Front

How do you calculate the percentage of a group?

Back

Front

What does it mean if a percentage is greater than 100%?

Back

A percentage greater than 100% indicates that the part is larger than the whole, which is not possible in a standard context. It may suggest an error in calculation or interpretation.

Front

What is the relationship between fractions and percentages?

Back

Front

How do you convert a fraction to a percentage?

Back

Front

What is the importance of understanding proportions in real life?

Back

Understanding proportions is important for solving problems related to ratios, scaling, and comparisons in real life, such as cooking, budgeting, and interpreting data.