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Finding the Fourth Proportional to 363.84, 502.20 and 232.80

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Solution

The fourth proportional to 363.84, 502.20 and 232.80 is: 321.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.84 : 502.20 = 232.80 : x
  2. Step 2: Convert to fraction form
    363.84/502.20 = 232.80/x
  3. Step 3: Cross multiply
    363.84x = 502.20 × 232.80
  4. Step 4: Simplify right side
    363.84x = 116,912.16
  5. Step 5: Solve for x
    x = 116,912.16/363.84
  6. Step 6: Final answer
    x = 321.33

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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.