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Finding the Fourth Proportional to 418.28, 627.58 and 174.79

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Solution

The fourth proportional to 418.28, 627.58 and 174.79 is: 262.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.28 : 627.58 = 174.79 : x
  2. Step 2: Convert to fraction form
    418.28/627.58 = 174.79/x
  3. Step 3: Cross multiply
    418.28x = 627.58 × 174.79
  4. Step 4: Simplify right side
    418.28x = 109,691.57
  5. Step 5: Solve for x
    x = 109,691.57/418.28
  6. Step 6: Final answer
    x = 262.24

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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.