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Finding the Fourth Proportional to 222.85, 334.02 and 131.73

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Solution

The fourth proportional to 222.85, 334.02 and 131.73 is: 197.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.85 : 334.02 = 131.73 : x
  2. Step 2: Convert to fraction form
    222.85/334.02 = 131.73/x
  3. Step 3: Cross multiply
    222.85x = 334.02 × 131.73
  4. Step 4: Simplify right side
    222.85x = 43,999.70
  5. Step 5: Solve for x
    x = 43,999.70/222.85
  6. Step 6: Final answer
    x = 197.44

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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.