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Finding the Fourth Proportional to 232.77, 321.23 and 127.86

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Solution

The fourth proportional to 232.77, 321.23 and 127.86 is: 176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.77 : 321.23 = 127.86 : x
  2. Step 2: Convert to fraction form
    232.77/321.23 = 127.86/x
  3. Step 3: Cross multiply
    232.77x = 321.23 × 127.86
  4. Step 4: Simplify right side
    232.77x = 41,072.47
  5. Step 5: Solve for x
    x = 41,072.47/232.77
  6. Step 6: Final answer
    x = 176.45

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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.