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Finding the Fourth Proportional to 326.03, 489.03 and 120.56

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Solution

The fourth proportional to 326.03, 489.03 and 120.56 is: 180.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.03 : 489.03 = 120.56 : x
  2. Step 2: Convert to fraction form
    326.03/489.03 = 120.56/x
  3. Step 3: Cross multiply
    326.03x = 489.03 × 120.56
  4. Step 4: Simplify right side
    326.03x = 58,957.46
  5. Step 5: Solve for x
    x = 58,957.46/326.03
  6. Step 6: Final answer
    x = 180.83

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