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Finding the Fourth Proportional to 484.54, 721.10 and 479.68

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Solution

The fourth proportional to 484.54, 721.10 and 479.68 is: 713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.54 : 721.10 = 479.68 : x
  2. Step 2: Convert to fraction form
    484.54/721.10 = 479.68/x
  3. Step 3: Cross multiply
    484.54x = 721.10 × 479.68
  4. Step 4: Simplify right side
    484.54x = 345,896.64
  5. Step 5: Solve for x
    x = 345,896.64/484.54
  6. Step 6: Final answer
    x = 713.87

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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.