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Finding the Fourth Proportional to 500.46, 746.56 and 479.72

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Solution

The fourth proportional to 500.46, 746.56 and 479.72 is: 715.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.46 : 746.56 = 479.72 : x
  2. Step 2: Convert to fraction form
    500.46/746.56 = 479.72/x
  3. Step 3: Cross multiply
    500.46x = 746.56 × 479.72
  4. Step 4: Simplify right side
    500.46x = 358,139.76
  5. Step 5: Solve for x
    x = 358,139.76/500.46
  6. Step 6: Final answer
    x = 715.62

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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.