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Finding the Fourth Proportional to 644.00, 967.16 and 617.90

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Solution

The fourth proportional to 644.00, 967.16 and 617.90 is: 927.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.00 : 967.16 = 617.90 : x
  2. Step 2: Convert to fraction form
    644.00/967.16 = 617.90/x
  3. Step 3: Cross multiply
    644.00x = 967.16 × 617.90
  4. Step 4: Simplify right side
    644.00x = 597,604.87
  5. Step 5: Solve for x
    x = 597,604.87/644.00
  6. Step 6: Final answer
    x = 927.97

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