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Finding the Fourth Proportional to 514.28, 771.59 and 206.08

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Solution

The fourth proportional to 514.28, 771.59 and 206.08 is: 309.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.28 : 771.59 = 206.08 : x
  2. Step 2: Convert to fraction form
    514.28/771.59 = 206.08/x
  3. Step 3: Cross multiply
    514.28x = 771.59 × 206.08
  4. Step 4: Simplify right side
    514.28x = 159,007.85
  5. Step 5: Solve for x
    x = 159,007.85/514.28
  6. Step 6: Final answer
    x = 309.18

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