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Finding the Fourth Proportional to 1,001.43, 1,502.21 and 635.71

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Solution

The fourth proportional to 1,001.43, 1,502.21 and 635.71 is: 953.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.43 : 1,502.21 = 635.71 : x
  2. Step 2: Convert to fraction form
    1,001.43/1,502.21 = 635.71/x
  3. Step 3: Cross multiply
    1,001.43x = 1,502.21 × 635.71
  4. Step 4: Simplify right side
    1,001.43x = 954,966.74
  5. Step 5: Solve for x
    x = 954,966.74/1,001.43
  6. Step 6: Final answer
    x = 953.61

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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.