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Finding the Fourth Proportional to 134.21, 200.42 and 132.79

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Solution

The fourth proportional to 134.21, 200.42 and 132.79 is: 198.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.21 : 200.42 = 132.79 : x
  2. Step 2: Convert to fraction form
    134.21/200.42 = 132.79/x
  3. Step 3: Cross multiply
    134.21x = 200.42 × 132.79
  4. Step 4: Simplify right side
    134.21x = 26,614.23
  5. Step 5: Solve for x
    x = 26,614.23/134.21
  6. Step 6: Final answer
    x = 198.31

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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.