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Finding the Fourth Proportional to 635.79, 952.43 and 418.71

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Solution

The fourth proportional to 635.79, 952.43 and 418.71 is: 627.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.79 : 952.43 = 418.71 : x
  2. Step 2: Convert to fraction form
    635.79/952.43 = 418.71/x
  3. Step 3: Cross multiply
    635.79x = 952.43 × 418.71
  4. Step 4: Simplify right side
    635.79x = 398,789.87
  5. Step 5: Solve for x
    x = 398,789.87/635.79
  6. Step 6: Final answer
    x = 627.24

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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.