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Finding the Fourth Proportional to 133.98, 201.03 and 69.85

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Solution

The fourth proportional to 133.98, 201.03 and 69.85 is: 104.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.98 : 201.03 = 69.85 : x
  2. Step 2: Convert to fraction form
    133.98/201.03 = 69.85/x
  3. Step 3: Cross multiply
    133.98x = 201.03 × 69.85
  4. Step 4: Simplify right side
    133.98x = 14,041.60
  5. Step 5: Solve for x
    x = 14,041.60/133.98
  6. Step 6: Final answer
    x = 104.81

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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.