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Finding the Fourth Proportional to 516.63, 774.95 and 131.88

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Solution

The fourth proportional to 516.63, 774.95 and 131.88 is: 197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.63 : 774.95 = 131.88 : x
  2. Step 2: Convert to fraction form
    516.63/774.95 = 131.88/x
  3. Step 3: Cross multiply
    516.63x = 774.95 × 131.88
  4. Step 4: Simplify right side
    516.63x = 102,200.41
  5. Step 5: Solve for x
    x = 102,200.41/516.63
  6. Step 6: Final answer
    x = 197.82

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