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Finding the Fourth Proportional to 223.55, 334.46 and 136.87

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Solution

The fourth proportional to 223.55, 334.46 and 136.87 is: 204.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.55 : 334.46 = 136.87 : x
  2. Step 2: Convert to fraction form
    223.55/334.46 = 136.87/x
  3. Step 3: Cross multiply
    223.55x = 334.46 × 136.87
  4. Step 4: Simplify right side
    223.55x = 45,777.54
  5. Step 5: Solve for x
    x = 45,777.54/223.55
  6. Step 6: Final answer
    x = 204.78

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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.