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Finding the Fourth Proportional to 654.08, 902.27 and 391.91

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Solution

The fourth proportional to 654.08, 902.27 and 391.91 is: 540.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.08 : 902.27 = 391.91 : x
  2. Step 2: Convert to fraction form
    654.08/902.27 = 391.91/x
  3. Step 3: Cross multiply
    654.08x = 902.27 × 391.91
  4. Step 4: Simplify right side
    654.08x = 353,605.10
  5. Step 5: Solve for x
    x = 353,605.10/654.08
  6. Step 6: Final answer
    x = 540.62

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