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Finding the Fourth Proportional to 724.55, 999.68 and 444.72

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Solution

The fourth proportional to 724.55, 999.68 and 444.72 is: 613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.55 : 999.68 = 444.72 : x
  2. Step 2: Convert to fraction form
    724.55/999.68 = 444.72/x
  3. Step 3: Cross multiply
    724.55x = 999.68 × 444.72
  4. Step 4: Simplify right side
    724.55x = 444,579.21
  5. Step 5: Solve for x
    x = 444,579.21/724.55
  6. Step 6: Final answer
    x = 613.60

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