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Finding the Fourth Proportional to 223.87, 335.85 and 115.63

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Solution

The fourth proportional to 223.87, 335.85 and 115.63 is: 173.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.87 : 335.85 = 115.63 : x
  2. Step 2: Convert to fraction form
    223.87/335.85 = 115.63/x
  3. Step 3: Cross multiply
    223.87x = 335.85 × 115.63
  4. Step 4: Simplify right side
    223.87x = 38,834.34
  5. Step 5: Solve for x
    x = 38,834.34/223.87
  6. Step 6: Final answer
    x = 173.47

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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.