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Finding the Fourth Proportional to 223.89, 335.90 and 115.66

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Solution

The fourth proportional to 223.89, 335.90 and 115.66 is: 173.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.89 : 335.90 = 115.66 : x
  2. Step 2: Convert to fraction form
    223.89/335.90 = 115.66/x
  3. Step 3: Cross multiply
    223.89x = 335.90 × 115.66
  4. Step 4: Simplify right side
    223.89x = 38,850.19
  5. Step 5: Solve for x
    x = 38,850.19/223.89
  6. Step 6: Final answer
    x = 173.52

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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.