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Finding the Fourth Proportional to 518.42, 777.67 and 225.93

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Solution

The fourth proportional to 518.42, 777.67 and 225.93 is: 338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.42 : 777.67 = 225.93 : x
  2. Step 2: Convert to fraction form
    518.42/777.67 = 225.93/x
  3. Step 3: Cross multiply
    518.42x = 777.67 × 225.93
  4. Step 4: Simplify right side
    518.42x = 175,698.98
  5. Step 5: Solve for x
    x = 175,698.98/518.42
  6. Step 6: Final answer
    x = 338.91

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