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Finding the Fourth Proportional to 269.41, 371.59 and 158.78

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Solution

The fourth proportional to 269.41, 371.59 and 158.78 is: 219.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.41 : 371.59 = 158.78 : x
  2. Step 2: Convert to fraction form
    269.41/371.59 = 158.78/x
  3. Step 3: Cross multiply
    269.41x = 371.59 × 158.78
  4. Step 4: Simplify right side
    269.41x = 59,001.06
  5. Step 5: Solve for x
    x = 59,001.06/269.41
  6. Step 6: Final answer
    x = 219.00

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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.