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Finding the Fourth Proportional to 371.48, 556.82 and 268.71

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Solution

The fourth proportional to 371.48, 556.82 and 268.71 is: 402.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.48 : 556.82 = 268.71 : x
  2. Step 2: Convert to fraction form
    371.48/556.82 = 268.71/x
  3. Step 3: Cross multiply
    371.48x = 556.82 × 268.71
  4. Step 4: Simplify right side
    371.48x = 149,625.17
  5. Step 5: Solve for x
    x = 149,625.17/371.48
  6. Step 6: Final answer
    x = 402.78

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Why These Related Problems?

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