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Finding the Fourth Proportional to 417.97, 627.50 and 225.73

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Solution

The fourth proportional to 417.97, 627.50 and 225.73 is: 338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.97 : 627.50 = 225.73 : x
  2. Step 2: Convert to fraction form
    417.97/627.50 = 225.73/x
  3. Step 3: Cross multiply
    417.97x = 627.50 × 225.73
  4. Step 4: Simplify right side
    417.97x = 141,644.45
  5. Step 5: Solve for x
    x = 141,644.45/417.97
  6. Step 6: Final answer
    x = 338.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.