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Finding the Fourth Proportional to 284.31, 425.94 and 154.11

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Solution

The fourth proportional to 284.31, 425.94 and 154.11 is: 230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.31 : 425.94 = 154.11 : x
  2. Step 2: Convert to fraction form
    284.31/425.94 = 154.11/x
  3. Step 3: Cross multiply
    284.31x = 425.94 × 154.11
  4. Step 4: Simplify right side
    284.31x = 65,641.61
  5. Step 5: Solve for x
    x = 65,641.61/284.31
  6. Step 6: Final answer
    x = 230.88

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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.