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Finding the Fourth Proportional to 133.80, 199.49 and 124.44

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Solution

The fourth proportional to 133.80, 199.49 and 124.44 is: 185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.80 : 199.49 = 124.44 : x
  2. Step 2: Convert to fraction form
    133.80/199.49 = 124.44/x
  3. Step 3: Cross multiply
    133.80x = 199.49 × 124.44
  4. Step 4: Simplify right side
    133.80x = 24,824.54
  5. Step 5: Solve for x
    x = 24,824.54/133.80
  6. Step 6: Final answer
    x = 185.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.