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Finding the Fourth Proportional to 223.38, 334.49 and 120.70

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Solution

The fourth proportional to 223.38, 334.49 and 120.70 is: 180.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.38 : 334.49 = 120.70 : x
  2. Step 2: Convert to fraction form
    223.38/334.49 = 120.70/x
  3. Step 3: Cross multiply
    223.38x = 334.49 × 120.70
  4. Step 4: Simplify right side
    223.38x = 40,371.56
  5. Step 5: Solve for x
    x = 40,371.56/223.38
  6. Step 6: Final answer
    x = 180.73

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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.