Finding the Third Proportional to 239 and 387.50
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Solution
The third proportional to 239 and 387.50 is: 628.27
Step by Step Solution
- Step 1: Write the proportion equation
239 : 387.50 = 387.50 : x - Step 2: Convert to fraction form
239/387.50 = 387.50/x - Step 3: Cross multiply
239x = 387.50 × 387.50 - Step 4: Simplify right side
239x = 150,156.25 - Step 5: Solve for x
x = 150,156.25/239 - Step 6: Final answer
x = 628.27
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These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.