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Finding the Third Proportional to 356.91 and 539.16

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Solution

The third proportional to 356.91 and 539.16 is: 814.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.91 : 539.16 = 539.16 : x
  2. Step 2: Convert to fraction form
    356.91/539.16 = 539.16/x
  3. Step 3: Cross multiply
    356.91x = 539.16 × 539.16
  4. Step 4: Simplify right side
    356.91x = 290,689.46
  5. Step 5: Solve for x
    x = 290,689.46/356.91
  6. Step 6: Final answer
    x = 814.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.