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Finding the Fourth Proportional to 475.92, 654.68 and 413.28

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Solution

The fourth proportional to 475.92, 654.68 and 413.28 is: 568.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.92 : 654.68 = 413.28 : x
  2. Step 2: Convert to fraction form
    475.92/654.68 = 413.28/x
  3. Step 3: Cross multiply
    475.92x = 654.68 × 413.28
  4. Step 4: Simplify right side
    475.92x = 270,566.15
  5. Step 5: Solve for x
    x = 270,566.15/475.92
  6. Step 6: Final answer
    x = 568.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.