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Finding the Fourth Proportional to 513.38, 769.77 and 239.64

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Solution

The fourth proportional to 513.38, 769.77 and 239.64 is: 359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.38 : 769.77 = 239.64 : x
  2. Step 2: Convert to fraction form
    513.38/769.77 = 239.64/x
  3. Step 3: Cross multiply
    513.38x = 769.77 × 239.64
  4. Step 4: Simplify right side
    513.38x = 184,467.68
  5. Step 5: Solve for x
    x = 184,467.68/513.38
  6. Step 6: Final answer
    x = 359.32

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