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Finding the Fourth Proportional to 269.36, 371.60 and 158.80

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Solution

The fourth proportional to 269.36, 371.60 and 158.80 is: 219.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.36 : 371.60 = 158.80 : x
  2. Step 2: Convert to fraction form
    269.36/371.60 = 158.80/x
  3. Step 3: Cross multiply
    269.36x = 371.60 × 158.80
  4. Step 4: Simplify right side
    269.36x = 59,010.08
  5. Step 5: Solve for x
    x = 59,010.08/269.36
  6. Step 6: Final answer
    x = 219.08

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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.