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Finding the Fourth Proportional to 322.38, 484.17 and 206.94

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Solution

The fourth proportional to 322.38, 484.17 and 206.94 is: 310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.38 : 484.17 = 206.94 : x
  2. Step 2: Convert to fraction form
    322.38/484.17 = 206.94/x
  3. Step 3: Cross multiply
    322.38x = 484.17 × 206.94
  4. Step 4: Simplify right side
    322.38x = 100,194.14
  5. Step 5: Solve for x
    x = 100,194.14/322.38
  6. Step 6: Final answer
    x = 310.80

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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.