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Finding the Fourth Proportional to 371.25, 557.09 and 178.88

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Solution

The fourth proportional to 371.25, 557.09 and 178.88 is: 268.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.25 : 557.09 = 178.88 : x
  2. Step 2: Convert to fraction form
    371.25/557.09 = 178.88/x
  3. Step 3: Cross multiply
    371.25x = 557.09 × 178.88
  4. Step 4: Simplify right side
    371.25x = 99,648.58
  5. Step 5: Solve for x
    x = 99,648.58/371.25
  6. Step 6: Final answer
    x = 268.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.