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Finding the Fourth Proportional to 486.73, 724.68 and 484.30

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Solution

The fourth proportional to 486.73, 724.68 and 484.30 is: 721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.73 : 724.68 = 484.30 : x
  2. Step 2: Convert to fraction form
    486.73/724.68 = 484.30/x
  3. Step 3: Cross multiply
    486.73x = 724.68 × 484.30
  4. Step 4: Simplify right side
    486.73x = 350,962.52
  5. Step 5: Solve for x
    x = 350,962.52/486.73
  6. Step 6: Final answer
    x = 721.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.