Finding the Third Proportional to 679.50 and 765
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Solution
The third proportional to 679.50 and 765 is: 861.26
Step by Step Solution
- Step 1: Write the proportion equation
679.50 : 765 = 765 : x - Step 2: Convert to fraction form
679.50/765 = 765/x - Step 3: Cross multiply
679.50x = 765 × 765 - Step 4: Simplify right side
679.50x = 585,225 - Step 5: Solve for x
x = 585,225/679.50 - Step 6: Final answer
x = 861.26
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Why These Related Problems?
These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.