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Finding the Fourth Proportional to 418.03, 576.81 and 231.49

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Solution

The fourth proportional to 418.03, 576.81 and 231.49 is: 319.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.03 : 576.81 = 231.49 : x
  2. Step 2: Convert to fraction form
    418.03/576.81 = 231.49/x
  3. Step 3: Cross multiply
    418.03x = 576.81 × 231.49
  4. Step 4: Simplify right side
    418.03x = 133,525.75
  5. Step 5: Solve for x
    x = 133,525.75/418.03
  6. Step 6: Final answer
    x = 319.42

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