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Finding the Fourth Proportional to 395.76, 593.87 and 213.15

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Solution

The fourth proportional to 395.76, 593.87 and 213.15 is: 319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.76 : 593.87 = 213.15 : x
  2. Step 2: Convert to fraction form
    395.76/593.87 = 213.15/x
  3. Step 3: Cross multiply
    395.76x = 593.87 × 213.15
  4. Step 4: Simplify right side
    395.76x = 126,585.75
  5. Step 5: Solve for x
    x = 126,585.75/395.76
  6. Step 6: Final answer
    x = 319.85

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