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Finding the Fourth Proportional to 480.48, 717.32 and 425.92

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Solution

The fourth proportional to 480.48, 717.32 and 425.92 is: 635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.48 : 717.32 = 425.92 : x
  2. Step 2: Convert to fraction form
    480.48/717.32 = 425.92/x
  3. Step 3: Cross multiply
    480.48x = 717.32 × 425.92
  4. Step 4: Simplify right side
    480.48x = 305,520.93
  5. Step 5: Solve for x
    x = 305,520.93/480.48
  6. Step 6: Final answer
    x = 635.87

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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.