Finding the Third Proportional to 428.50 and 557
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Solution
The third proportional to 428.50 and 557 is: 724.04
Step by Step Solution
- Step 1: Write the proportion equation
428.50 : 557 = 557 : x - Step 2: Convert to fraction form
428.50/557 = 557/x - Step 3: Cross multiply
428.50x = 557 × 557 - Step 4: Simplify right side
428.50x = 310,249 - Step 5: Solve for x
x = 310,249/428.50 - Step 6: Final answer
x = 724.04
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These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.