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Finding the Fourth Proportional to 232.28, 346.25 and 221.80

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Solution

The fourth proportional to 232.28, 346.25 and 221.80 is: 330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.28 : 346.25 = 221.80 : x
  2. Step 2: Convert to fraction form
    232.28/346.25 = 221.80/x
  3. Step 3: Cross multiply
    232.28x = 346.25 × 221.80
  4. Step 4: Simplify right side
    232.28x = 76,798.25
  5. Step 5: Solve for x
    x = 76,798.25/232.28
  6. Step 6: Final answer
    x = 330.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.