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Finding the Fourth Proportional to 269.58, 371.98 and 159.09

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Solution

The fourth proportional to 269.58, 371.98 and 159.09 is: 219.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.58 : 371.98 = 159.09 : x
  2. Step 2: Convert to fraction form
    269.58/371.98 = 159.09/x
  3. Step 3: Cross multiply
    269.58x = 371.98 × 159.09
  4. Step 4: Simplify right side
    269.58x = 59,178.30
  5. Step 5: Solve for x
    x = 59,178.30/269.58
  6. Step 6: Final answer
    x = 219.52

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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.