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Finding the Fourth Proportional to 133.41, 200.12 and 61.19

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Solution

The fourth proportional to 133.41, 200.12 and 61.19 is: 91.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.41 : 200.12 = 61.19 : x
  2. Step 2: Convert to fraction form
    133.41/200.12 = 61.19/x
  3. Step 3: Cross multiply
    133.41x = 200.12 × 61.19
  4. Step 4: Simplify right side
    133.41x = 12,244.04
  5. Step 5: Solve for x
    x = 12,244.04/133.41
  6. Step 6: Final answer
    x = 91.78

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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.