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Finding the Fourth Proportional to 418.38, 577.48 and 252.56

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Solution

The fourth proportional to 418.38, 577.48 and 252.56 is: 348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.38 : 577.48 = 252.56 : x
  2. Step 2: Convert to fraction form
    418.38/577.48 = 252.56/x
  3. Step 3: Cross multiply
    418.38x = 577.48 × 252.56
  4. Step 4: Simplify right side
    418.38x = 145,850.42
  5. Step 5: Solve for x
    x = 145,850.42/418.38
  6. Step 6: Final answer
    x = 348.61

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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.