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Finding the Fourth Proportional to 371.93, 557.07 and 279.49

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Solution

The fourth proportional to 371.93, 557.07 and 279.49 is: 418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.93 : 557.07 = 279.49 : x
  2. Step 2: Convert to fraction form
    371.93/557.07 = 279.49/x
  3. Step 3: Cross multiply
    371.93x = 557.07 × 279.49
  4. Step 4: Simplify right side
    371.93x = 155,695.49
  5. Step 5: Solve for x
    x = 155,695.49/371.93
  6. Step 6: Final answer
    x = 418.62

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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.