Finding the Third Proportional to 721 and 851.50
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Solution
The third proportional to 721 and 851.50 is: 1,005.62
Step by Step Solution
- Step 1: Write the proportion equation
721 : 851.50 = 851.50 : x - Step 2: Convert to fraction form
721/851.50 = 851.50/x - Step 3: Cross multiply
721x = 851.50 × 851.50 - Step 4: Simplify right side
721x = 725,052.25 - Step 5: Solve for x
x = 725,052.25/721 - Step 6: Final answer
x = 1,005.62
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Why These Related Problems?
These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.