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Finding the Fourth Proportional to 133.80, 200.58 and 52.66

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Solution

The fourth proportional to 133.80, 200.58 and 52.66 is: 78.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.80 : 200.58 = 52.66 : x
  2. Step 2: Convert to fraction form
    133.80/200.58 = 52.66/x
  3. Step 3: Cross multiply
    133.80x = 200.58 × 52.66
  4. Step 4: Simplify right side
    133.80x = 10,562.54
  5. Step 5: Solve for x
    x = 10,562.54/133.80
  6. Step 6: Final answer
    x = 78.94

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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.