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Finding the Fourth Proportional to 414.78, 572.21 and 248.94

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Solution

The fourth proportional to 414.78, 572.21 and 248.94 is: 343.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.78 : 572.21 = 248.94 : x
  2. Step 2: Convert to fraction form
    414.78/572.21 = 248.94/x
  3. Step 3: Cross multiply
    414.78x = 572.21 × 248.94
  4. Step 4: Simplify right side
    414.78x = 142,444.71
  5. Step 5: Solve for x
    x = 142,444.71/414.78
  6. Step 6: Final answer
    x = 343.42

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