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Finding the Fourth Proportional to 323.32, 484.90 and 220.59

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Solution

The fourth proportional to 323.32, 484.90 and 220.59 is: 330.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.32 : 484.90 = 220.59 : x
  2. Step 2: Convert to fraction form
    323.32/484.90 = 220.59/x
  3. Step 3: Cross multiply
    323.32x = 484.90 × 220.59
  4. Step 4: Simplify right side
    323.32x = 106,960.56
  5. Step 5: Solve for x
    x = 106,960.56/323.32
  6. Step 6: Final answer
    x = 330.82

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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.