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Finding the Fourth Proportional to 431.89, 647.83 and 158.04

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Solution

The fourth proportional to 431.89, 647.83 and 158.04 is: 237.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.89 : 647.83 = 158.04 : x
  2. Step 2: Convert to fraction form
    431.89/647.83 = 158.04/x
  3. Step 3: Cross multiply
    431.89x = 647.83 × 158.04
  4. Step 4: Simplify right side
    431.89x = 102,383.25
  5. Step 5: Solve for x
    x = 102,383.25/431.89
  6. Step 6: Final answer
    x = 237.06

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