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Finding the Fourth Proportional to 222.09, 332.91 and 112.49

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Solution

The fourth proportional to 222.09, 332.91 and 112.49 is: 168.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.09 : 332.91 = 112.49 : x
  2. Step 2: Convert to fraction form
    222.09/332.91 = 112.49/x
  3. Step 3: Cross multiply
    222.09x = 332.91 × 112.49
  4. Step 4: Simplify right side
    222.09x = 37,447.38
  5. Step 5: Solve for x
    x = 37,447.38/222.09
  6. Step 6: Final answer
    x = 168.61

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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.