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Finding the Fourth Proportional to 560.57, 839.79 and 286.83

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Solution

The fourth proportional to 560.57, 839.79 and 286.83 is: 429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.57 : 839.79 = 286.83 : x
  2. Step 2: Convert to fraction form
    560.57/839.79 = 286.83/x
  3. Step 3: Cross multiply
    560.57x = 839.79 × 286.83
  4. Step 4: Simplify right side
    560.57x = 240,876.97
  5. Step 5: Solve for x
    x = 240,876.97/560.57
  6. Step 6: Final answer
    x = 429.70

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