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Finding the Fourth Proportional to 284.92, 426.31 and 169.43

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Solution

The fourth proportional to 284.92, 426.31 and 169.43 is: 253.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.92 : 426.31 = 169.43 : x
  2. Step 2: Convert to fraction form
    284.92/426.31 = 169.43/x
  3. Step 3: Cross multiply
    284.92x = 426.31 × 169.43
  4. Step 4: Simplify right side
    284.92x = 72,228.10
  5. Step 5: Solve for x
    x = 72,228.10/284.92
  6. Step 6: Final answer
    x = 253.51

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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.