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Finding the Fourth Proportional to 480.77, 724.88 and 475.61

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Solution

The fourth proportional to 480.77, 724.88 and 475.61 is: 717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.77 : 724.88 = 475.61 : x
  2. Step 2: Convert to fraction form
    480.77/724.88 = 475.61/x
  3. Step 3: Cross multiply
    480.77x = 724.88 × 475.61
  4. Step 4: Simplify right side
    480.77x = 344,757.74
  5. Step 5: Solve for x
    x = 344,757.74/480.77
  6. Step 6: Final answer
    x = 717.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.