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Finding the Fourth Proportional to 269.66, 371.99 and 238.58

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Solution

The fourth proportional to 269.66, 371.99 and 238.58 is: 329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.66 : 371.99 = 238.58 : x
  2. Step 2: Convert to fraction form
    269.66/371.99 = 238.58/x
  3. Step 3: Cross multiply
    269.66x = 371.99 × 238.58
  4. Step 4: Simplify right side
    269.66x = 88,749.51
  5. Step 5: Solve for x
    x = 88,749.51/269.66
  6. Step 6: Final answer
    x = 329.11

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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.