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Finding the Fourth Proportional to 527.79, 791.47 and 219.43

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Solution

The fourth proportional to 527.79, 791.47 and 219.43 is: 329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.79 : 791.47 = 219.43 : x
  2. Step 2: Convert to fraction form
    527.79/791.47 = 219.43/x
  3. Step 3: Cross multiply
    527.79x = 791.47 × 219.43
  4. Step 4: Simplify right side
    527.79x = 173,672.26
  5. Step 5: Solve for x
    x = 173,672.26/527.79
  6. Step 6: Final answer
    x = 329.06

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