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Finding the Fourth Proportional to 518.62, 777.96 and 171.98

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Solution

The fourth proportional to 518.62, 777.96 and 171.98 is: 257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.62 : 777.96 = 171.98 : x
  2. Step 2: Convert to fraction form
    518.62/777.96 = 171.98/x
  3. Step 3: Cross multiply
    518.62x = 777.96 × 171.98
  4. Step 4: Simplify right side
    518.62x = 133,789.67
  5. Step 5: Solve for x
    x = 133,789.67/518.62
  6. Step 6: Final answer
    x = 257.97

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