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Finding the Fourth Proportional to 269.87, 371.75 and 191.09

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Solution

The fourth proportional to 269.87, 371.75 and 191.09 is: 263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.87 : 371.75 = 191.09 : x
  2. Step 2: Convert to fraction form
    269.87/371.75 = 191.09/x
  3. Step 3: Cross multiply
    269.87x = 371.75 × 191.09
  4. Step 4: Simplify right side
    269.87x = 71,034.89
  5. Step 5: Solve for x
    x = 71,034.89/269.87
  6. Step 6: Final answer
    x = 263.22

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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.