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Finding the Fourth Proportional to 221.87, 333.17 and 167.03

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Solution

The fourth proportional to 221.87, 333.17 and 167.03 is: 250.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.87 : 333.17 = 167.03 : x
  2. Step 2: Convert to fraction form
    221.87/333.17 = 167.03/x
  3. Step 3: Cross multiply
    221.87x = 333.17 × 167.03
  4. Step 4: Simplify right side
    221.87x = 55,648.14
  5. Step 5: Solve for x
    x = 55,648.14/221.87
  6. Step 6: Final answer
    x = 250.82

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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.