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Finding the Fourth Proportional to 399.68, 600.16 and 270.56

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Solution

The fourth proportional to 399.68, 600.16 and 270.56 is: 406.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.68 : 600.16 = 270.56 : x
  2. Step 2: Convert to fraction form
    399.68/600.16 = 270.56/x
  3. Step 3: Cross multiply
    399.68x = 600.16 × 270.56
  4. Step 4: Simplify right side
    399.68x = 162,379.29
  5. Step 5: Solve for x
    x = 162,379.29/399.68
  6. Step 6: Final answer
    x = 406.27

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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.