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Finding the Fourth Proportional to 232.37, 320.86 and 221.44

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Solution

The fourth proportional to 232.37, 320.86 and 221.44 is: 305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.37 : 320.86 = 221.44 : x
  2. Step 2: Convert to fraction form
    232.37/320.86 = 221.44/x
  3. Step 3: Cross multiply
    232.37x = 320.86 × 221.44
  4. Step 4: Simplify right side
    232.37x = 71,049.63
  5. Step 5: Solve for x
    x = 71,049.63/232.37
  6. Step 6: Final answer
    x = 305.76

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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.