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Finding the Fourth Proportional to 322.35, 443.46 and 284.82

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Solution

The fourth proportional to 322.35, 443.46 and 284.82 is: 391.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.35 : 443.46 = 284.82 : x
  2. Step 2: Convert to fraction form
    322.35/443.46 = 284.82/x
  3. Step 3: Cross multiply
    322.35x = 443.46 × 284.82
  4. Step 4: Simplify right side
    322.35x = 126,306.28
  5. Step 5: Solve for x
    x = 126,306.28/322.35
  6. Step 6: Final answer
    x = 391.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.