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Finding the Fourth Proportional to 133.70, 200.61 and 42.44

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Solution

The fourth proportional to 133.70, 200.61 and 42.44 is: 63.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.70 : 200.61 = 42.44 : x
  2. Step 2: Convert to fraction form
    133.70/200.61 = 42.44/x
  3. Step 3: Cross multiply
    133.70x = 200.61 × 42.44
  4. Step 4: Simplify right side
    133.70x = 8,512.89
  5. Step 5: Solve for x
    x = 8,512.89/133.70
  6. Step 6: Final answer
    x = 63.67

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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.