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Finding the Fourth Proportional to 412.11, 618.33 and 247.89

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Solution

The fourth proportional to 412.11, 618.33 and 247.89 is: 371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.11 : 618.33 = 247.89 : x
  2. Step 2: Convert to fraction form
    412.11/618.33 = 247.89/x
  3. Step 3: Cross multiply
    412.11x = 618.33 × 247.89
  4. Step 4: Simplify right side
    412.11x = 153,276.58
  5. Step 5: Solve for x
    x = 153,276.58/412.11
  6. Step 6: Final answer
    x = 371.93

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