Finding the Third Proportional to 540 and 781.31
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Solution
The third proportional to 540 and 781.31 is: 1,130.46
Step by Step Solution
- Step 1: Write the proportion equation
540 : 781.31 = 781.31 : x - Step 2: Convert to fraction form
540/781.31 = 781.31/x - Step 3: Cross multiply
540x = 781.31 × 781.31 - Step 4: Simplify right side
540x = 610,449.22 - Step 5: Solve for x
x = 610,449.22/540 - Step 6: Final answer
x = 1,130.46
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Why These Related Problems?
These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.