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Finding the Fourth Proportional to 283.47, 425.17 and 100.87

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Solution

The fourth proportional to 283.47, 425.17 and 100.87 is: 151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.47 : 425.17 = 100.87 : x
  2. Step 2: Convert to fraction form
    283.47/425.17 = 100.87/x
  3. Step 3: Cross multiply
    283.47x = 425.17 × 100.87
  4. Step 4: Simplify right side
    283.47x = 42,886.90
  5. Step 5: Solve for x
    x = 42,886.90/283.47
  6. Step 6: Final answer
    x = 151.29

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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.