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Finding the Fourth Proportional to 383.04, 574.57 and 139.55

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Solution

The fourth proportional to 383.04, 574.57 and 139.55 is: 209.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.04 : 574.57 = 139.55 : x
  2. Step 2: Convert to fraction form
    383.04/574.57 = 139.55/x
  3. Step 3: Cross multiply
    383.04x = 574.57 × 139.55
  4. Step 4: Simplify right side
    383.04x = 80,181.24
  5. Step 5: Solve for x
    x = 80,181.24/383.04
  6. Step 6: Final answer
    x = 209.33

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