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Finding the Fourth Proportional to 269.47, 371.73 and 171.28

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Solution

The fourth proportional to 269.47, 371.73 and 171.28 is: 236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.47 : 371.73 = 171.28 : x
  2. Step 2: Convert to fraction form
    269.47/371.73 = 171.28/x
  3. Step 3: Cross multiply
    269.47x = 371.73 × 171.28
  4. Step 4: Simplify right side
    269.47x = 63,669.91
  5. Step 5: Solve for x
    x = 63,669.91/269.47
  6. Step 6: Final answer
    x = 236.28

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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.