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Finding the Fourth Proportional to 192.62, 288.79 and 89.85

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Solution

The fourth proportional to 192.62, 288.79 and 89.85 is: 134.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.62 : 288.79 = 89.85 : x
  2. Step 2: Convert to fraction form
    192.62/288.79 = 89.85/x
  3. Step 3: Cross multiply
    192.62x = 288.79 × 89.85
  4. Step 4: Simplify right side
    192.62x = 25,946.86
  5. Step 5: Solve for x
    x = 25,946.86/192.62
  6. Step 6: Final answer
    x = 134.71

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