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Finding the Fourth Proportional to 416.20, 574.21 and 268.82

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Solution

The fourth proportional to 416.20, 574.21 and 268.82 is: 370.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.20 : 574.21 = 268.82 : x
  2. Step 2: Convert to fraction form
    416.20/574.21 = 268.82/x
  3. Step 3: Cross multiply
    416.20x = 574.21 × 268.82
  4. Step 4: Simplify right side
    416.20x = 154,359.13
  5. Step 5: Solve for x
    x = 154,359.13/416.20
  6. Step 6: Final answer
    x = 370.88

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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.