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Finding the Fourth Proportional to 578.78, 868.22 and 167.94

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Solution

The fourth proportional to 578.78, 868.22 and 167.94 is: 251.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.78 : 868.22 = 167.94 : x
  2. Step 2: Convert to fraction form
    578.78/868.22 = 167.94/x
  3. Step 3: Cross multiply
    578.78x = 868.22 × 167.94
  4. Step 4: Simplify right side
    578.78x = 145,808.66
  5. Step 5: Solve for x
    x = 145,808.66/578.78
  6. Step 6: Final answer
    x = 251.92

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