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Finding the Fourth Proportional to 323.11, 484.95 and 213.11

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Solution

The fourth proportional to 323.11, 484.95 and 213.11 is: 319.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.11 : 484.95 = 213.11 : x
  2. Step 2: Convert to fraction form
    323.11/484.95 = 213.11/x
  3. Step 3: Cross multiply
    323.11x = 484.95 × 213.11
  4. Step 4: Simplify right side
    323.11x = 103,350.62
  5. Step 5: Solve for x
    x = 103,350.62/323.11
  6. Step 6: Final answer
    x = 319.86

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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.