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Finding the Fourth Proportional to 383.79, 575.68 and 140.22

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Solution

The fourth proportional to 383.79, 575.68 and 140.22 is: 210.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.79 : 575.68 = 140.22 : x
  2. Step 2: Convert to fraction form
    383.79/575.68 = 140.22/x
  3. Step 3: Cross multiply
    383.79x = 575.68 × 140.22
  4. Step 4: Simplify right side
    383.79x = 80,721.85
  5. Step 5: Solve for x
    x = 80,721.85/383.79
  6. Step 6: Final answer
    x = 210.33

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