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Finding the Fourth Proportional to 414.38, 571.63 and 248.48

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Solution

The fourth proportional to 414.38, 571.63 and 248.48 is: 342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.38 : 571.63 = 248.48 : x
  2. Step 2: Convert to fraction form
    414.38/571.63 = 248.48/x
  3. Step 3: Cross multiply
    414.38x = 571.63 × 248.48
  4. Step 4: Simplify right side
    414.38x = 142,038.62
  5. Step 5: Solve for x
    x = 142,038.62/414.38
  6. Step 6: Final answer
    x = 342.78

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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.