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Finding the Fourth Proportional to 232.86, 321.39 and 203.70

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Solution

The fourth proportional to 232.86, 321.39 and 203.70 is: 281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.86 : 321.39 = 203.70 : x
  2. Step 2: Convert to fraction form
    232.86/321.39 = 203.70/x
  3. Step 3: Cross multiply
    232.86x = 321.39 × 203.70
  4. Step 4: Simplify right side
    232.86x = 65,467.14
  5. Step 5: Solve for x
    x = 65,467.14/232.86
  6. Step 6: Final answer
    x = 281.14

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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.