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Finding the Fourth Proportional to 395.27, 593.09 and 280.44

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Solution

The fourth proportional to 395.27, 593.09 and 280.44 is: 420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.27 : 593.09 = 280.44 : x
  2. Step 2: Convert to fraction form
    395.27/593.09 = 280.44/x
  3. Step 3: Cross multiply
    395.27x = 593.09 × 280.44
  4. Step 4: Simplify right side
    395.27x = 166,324.76
  5. Step 5: Solve for x
    x = 166,324.76/395.27
  6. Step 6: Final answer
    x = 420.79

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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.