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Finding the Fourth Proportional to 369.11, 553.70 and 326.17

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Solution

The fourth proportional to 369.11, 553.70 and 326.17 is: 489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.11 : 553.70 = 326.17 : x
  2. Step 2: Convert to fraction form
    369.11/553.70 = 326.17/x
  3. Step 3: Cross multiply
    369.11x = 553.70 × 326.17
  4. Step 4: Simplify right side
    369.11x = 180,600.07
  5. Step 5: Solve for x
    x = 180,600.07/369.11
  6. Step 6: Final answer
    x = 489.28

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