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Finding the Fourth Proportional to 539.23, 743.77 and 480.61

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Solution

The fourth proportional to 539.23, 743.77 and 480.61 is: 662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.23 : 743.77 = 480.61 : x
  2. Step 2: Convert to fraction form
    539.23/743.77 = 480.61/x
  3. Step 3: Cross multiply
    539.23x = 743.77 × 480.61
  4. Step 4: Simplify right side
    539.23x = 357,463.30
  5. Step 5: Solve for x
    x = 357,463.30/539.23
  6. Step 6: Final answer
    x = 662.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.