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Finding the Fourth Proportional to 449.28, 618.84 and 419.04

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Solution

The fourth proportional to 449.28, 618.84 and 419.04 is: 577.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.28 : 618.84 = 419.04 : x
  2. Step 2: Convert to fraction form
    449.28/618.84 = 419.04/x
  3. Step 3: Cross multiply
    449.28x = 618.84 × 419.04
  4. Step 4: Simplify right side
    449.28x = 259,318.71
  5. Step 5: Solve for x
    x = 259,318.71/449.28
  6. Step 6: Final answer
    x = 577.19

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