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Finding the Fourth Proportional to 322.38, 484.11 and 274.05

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Solution

The fourth proportional to 322.38, 484.11 and 274.05 is: 411.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.38 : 484.11 = 274.05 : x
  2. Step 2: Convert to fraction form
    322.38/484.11 = 274.05/x
  3. Step 3: Cross multiply
    322.38x = 484.11 × 274.05
  4. Step 4: Simplify right side
    322.38x = 132,670.35
  5. Step 5: Solve for x
    x = 132,670.35/322.38
  6. Step 6: Final answer
    x = 411.53

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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.