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Finding the Fourth Proportional to 394.83, 591.59 and 279.06

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Solution

The fourth proportional to 394.83, 591.59 and 279.06 is: 418.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.83 : 591.59 = 279.06 : x
  2. Step 2: Convert to fraction form
    394.83/591.59 = 279.06/x
  3. Step 3: Cross multiply
    394.83x = 591.59 × 279.06
  4. Step 4: Simplify right side
    394.83x = 165,087.71
  5. Step 5: Solve for x
    x = 165,087.71/394.83
  6. Step 6: Final answer
    x = 418.12

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