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Finding the Fourth Proportional to 408.14, 562.80 and 268.22

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Solution

The fourth proportional to 408.14, 562.80 and 268.22 is: 369.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.14 : 562.80 = 268.22 : x
  2. Step 2: Convert to fraction form
    408.14/562.80 = 268.22/x
  3. Step 3: Cross multiply
    408.14x = 562.80 × 268.22
  4. Step 4: Simplify right side
    408.14x = 150,954.22
  5. Step 5: Solve for x
    x = 150,954.22/408.14
  6. Step 6: Final answer
    x = 369.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.