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Finding the Fourth Proportional to 284.04, 426.33 and 137.88

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Solution

The fourth proportional to 284.04, 426.33 and 137.88 is: 206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.04 : 426.33 = 137.88 : x
  2. Step 2: Convert to fraction form
    284.04/426.33 = 137.88/x
  3. Step 3: Cross multiply
    284.04x = 426.33 × 137.88
  4. Step 4: Simplify right side
    284.04x = 58,782.38
  5. Step 5: Solve for x
    x = 58,782.38/284.04
  6. Step 6: Final answer
    x = 206.95

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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.