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Finding the Fourth Proportional to 418.06, 576.93 and 231.56

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Solution

The fourth proportional to 418.06, 576.93 and 231.56 is: 319.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.06 : 576.93 = 231.56 : x
  2. Step 2: Convert to fraction form
    418.06/576.93 = 231.56/x
  3. Step 3: Cross multiply
    418.06x = 576.93 × 231.56
  4. Step 4: Simplify right side
    418.06x = 133,593.84
  5. Step 5: Solve for x
    x = 133,593.84/418.06
  6. Step 6: Final answer
    x = 319.55

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