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Finding the Fourth Proportional to 447.93, 617.83 and 300.31

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Solution

The fourth proportional to 447.93, 617.83 and 300.31 is: 414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.93 : 617.83 = 300.31 : x
  2. Step 2: Convert to fraction form
    447.93/617.83 = 300.31/x
  3. Step 3: Cross multiply
    447.93x = 617.83 × 300.31
  4. Step 4: Simplify right side
    447.93x = 185,538.23
  5. Step 5: Solve for x
    x = 185,538.23/447.93
  6. Step 6: Final answer
    x = 414.21

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