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Finding the Fourth Proportional to 395.76, 593.44 and 121.78

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Solution

The fourth proportional to 395.76, 593.44 and 121.78 is: 182.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.76 : 593.44 = 121.78 : x
  2. Step 2: Convert to fraction form
    395.76/593.44 = 121.78/x
  3. Step 3: Cross multiply
    395.76x = 593.44 × 121.78
  4. Step 4: Simplify right side
    395.76x = 72,269.12
  5. Step 5: Solve for x
    x = 72,269.12/395.76
  6. Step 6: Final answer
    x = 182.61

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