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Finding the Fourth Proportional to 269.58, 371.88 and 171.16

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Solution

The fourth proportional to 269.58, 371.88 and 171.16 is: 236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.58 : 371.88 = 171.16 : x
  2. Step 2: Convert to fraction form
    269.58/371.88 = 171.16/x
  3. Step 3: Cross multiply
    269.58x = 371.88 × 171.16
  4. Step 4: Simplify right side
    269.58x = 63,650.98
  5. Step 5: Solve for x
    x = 63,650.98/269.58
  6. Step 6: Final answer
    x = 236.11

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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.