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Finding the Fourth Proportional to 698.62, 963.67 and 512.86

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Solution

The fourth proportional to 698.62, 963.67 and 512.86 is: 707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.62 : 963.67 = 512.86 : x
  2. Step 2: Convert to fraction form
    698.62/963.67 = 512.86/x
  3. Step 3: Cross multiply
    698.62x = 963.67 × 512.86
  4. Step 4: Simplify right side
    698.62x = 494,227.80
  5. Step 5: Solve for x
    x = 494,227.80/698.62
  6. Step 6: Final answer
    x = 707.43

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