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Finding the Fourth Proportional to 134.39, 202.76 and 129.84

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Solution

The fourth proportional to 134.39, 202.76 and 129.84 is: 195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.39 : 202.76 = 129.84 : x
  2. Step 2: Convert to fraction form
    134.39/202.76 = 129.84/x
  3. Step 3: Cross multiply
    134.39x = 202.76 × 129.84
  4. Step 4: Simplify right side
    134.39x = 26,326.36
  5. Step 5: Solve for x
    x = 26,326.36/134.39
  6. Step 6: Final answer
    x = 195.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.