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Finding the Fourth Proportional to 284.38, 426.56 and 113.38

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Solution

The fourth proportional to 284.38, 426.56 and 113.38 is: 170.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.38 : 426.56 = 113.38 : x
  2. Step 2: Convert to fraction form
    284.38/426.56 = 113.38/x
  3. Step 3: Cross multiply
    284.38x = 426.56 × 113.38
  4. Step 4: Simplify right side
    284.38x = 48,363.37
  5. Step 5: Solve for x
    x = 48,363.37/284.38
  6. Step 6: Final answer
    x = 170.07

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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.