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Finding the Fourth Proportional to 326.06, 489.20 and 204.17

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Solution

The fourth proportional to 326.06, 489.20 and 204.17 is: 306.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.06 : 489.20 = 204.17 : x
  2. Step 2: Convert to fraction form
    326.06/489.20 = 204.17/x
  3. Step 3: Cross multiply
    326.06x = 489.20 × 204.17
  4. Step 4: Simplify right side
    326.06x = 99,880.17
  5. Step 5: Solve for x
    x = 99,880.17/326.06
  6. Step 6: Final answer
    x = 306.33

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