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Finding the Fourth Proportional to 618.13, 925.83 and 328.96

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Solution

The fourth proportional to 618.13, 925.83 and 328.96 is: 492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.13 : 925.83 = 328.96 : x
  2. Step 2: Convert to fraction form
    618.13/925.83 = 328.96/x
  3. Step 3: Cross multiply
    618.13x = 925.83 × 328.96
  4. Step 4: Simplify right side
    618.13x = 304,561.04
  5. Step 5: Solve for x
    x = 304,561.04/618.13
  6. Step 6: Final answer
    x = 492.71

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