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Finding the Fourth Proportional to 431.82, 648.07 and 158.18

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Solution

The fourth proportional to 431.82, 648.07 and 158.18 is: 237.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.82 : 648.07 = 158.18 : x
  2. Step 2: Convert to fraction form
    431.82/648.07 = 158.18/x
  3. Step 3: Cross multiply
    431.82x = 648.07 × 158.18
  4. Step 4: Simplify right side
    431.82x = 102,508.08
  5. Step 5: Solve for x
    x = 102,508.08/431.82
  6. Step 6: Final answer
    x = 237.39

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