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Finding the Fourth Proportional to 195.35, 269.60 and 129.87

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Solution

The fourth proportional to 195.35, 269.60 and 129.87 is: 179.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.35 : 269.60 = 129.87 : x
  2. Step 2: Convert to fraction form
    195.35/269.60 = 129.87/x
  3. Step 3: Cross multiply
    195.35x = 269.60 × 129.87
  4. Step 4: Simplify right side
    195.35x = 35,012.30
  5. Step 5: Solve for x
    x = 35,012.30/195.35
  6. Step 6: Final answer
    x = 179.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.