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Finding the Fourth Proportional to 221.94, 332.10 and 166.86

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Solution

The fourth proportional to 221.94, 332.10 and 166.86 is: 249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.94 : 332.10 = 166.86 : x
  2. Step 2: Convert to fraction form
    221.94/332.10 = 166.86/x
  3. Step 3: Cross multiply
    221.94x = 332.10 × 166.86
  4. Step 4: Simplify right side
    221.94x = 55,414.21
  5. Step 5: Solve for x
    x = 55,414.21/221.94
  6. Step 6: Final answer
    x = 249.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.