Finding the Third Proportional to 396 and 715.50
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Solution
The third proportional to 396 and 715.50 is: 1,292.78
Step by Step Solution
- Step 1: Write the proportion equation
396 : 715.50 = 715.50 : x - Step 2: Convert to fraction form
396/715.50 = 715.50/x - Step 3: Cross multiply
396x = 715.50 × 715.50 - Step 4: Simplify right side
396x = 511,940.25 - Step 5: Solve for x
x = 511,940.25/396 - Step 6: Final answer
x = 1,292.78
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These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.