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Finding the Fourth Proportional to 232.81, 321.20 and 133.22

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Solution

The fourth proportional to 232.81, 321.20 and 133.22 is: 183.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.81 : 321.20 = 133.22 : x
  2. Step 2: Convert to fraction form
    232.81/321.20 = 133.22/x
  3. Step 3: Cross multiply
    232.81x = 321.20 × 133.22
  4. Step 4: Simplify right side
    232.81x = 42,787.99
  5. Step 5: Solve for x
    x = 42,787.99/232.81
  6. Step 6: Final answer
    x = 183.79

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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.