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Finding the Fourth Proportional to 223.69, 335.34 and 115.54

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Solution

The fourth proportional to 223.69, 335.34 and 115.54 is: 173.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.69 : 335.34 = 115.54 : x
  2. Step 2: Convert to fraction form
    223.69/335.34 = 115.54/x
  3. Step 3: Cross multiply
    223.69x = 335.34 × 115.54
  4. Step 4: Simplify right side
    223.69x = 38,745.18
  5. Step 5: Solve for x
    x = 38,745.18/223.69
  6. Step 6: Final answer
    x = 173.21

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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.