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Finding the Fourth Proportional to 278.24, 417.02 and 180.43

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Solution

The fourth proportional to 278.24, 417.02 and 180.43 is: 270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.24 : 417.02 = 180.43 : x
  2. Step 2: Convert to fraction form
    278.24/417.02 = 180.43/x
  3. Step 3: Cross multiply
    278.24x = 417.02 × 180.43
  4. Step 4: Simplify right side
    278.24x = 75,240.97
  5. Step 5: Solve for x
    x = 75,240.97/278.24
  6. Step 6: Final answer
    x = 270.42

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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.