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Finding the Fourth Proportional to 631.74, 871.17 and 410.70

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Solution

The fourth proportional to 631.74, 871.17 and 410.70 is: 566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.74 : 871.17 = 410.70 : x
  2. Step 2: Convert to fraction form
    631.74/871.17 = 410.70/x
  3. Step 3: Cross multiply
    631.74x = 871.17 × 410.70
  4. Step 4: Simplify right side
    631.74x = 357,789.52
  5. Step 5: Solve for x
    x = 357,789.52/631.74
  6. Step 6: Final answer
    x = 566.36

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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.