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Finding the Fourth Proportional to 498.13, 746.25 and 479.86

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Solution

The fourth proportional to 498.13, 746.25 and 479.86 is: 718.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.13 : 746.25 = 479.86 : x
  2. Step 2: Convert to fraction form
    498.13/746.25 = 479.86/x
  3. Step 3: Cross multiply
    498.13x = 746.25 × 479.86
  4. Step 4: Simplify right side
    498.13x = 358,095.53
  5. Step 5: Solve for x
    x = 358,095.53/498.13
  6. Step 6: Final answer
    x = 718.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.