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Finding the Fourth Proportional to 307.31, 424.09 and 167.42

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Solution

The fourth proportional to 307.31, 424.09 and 167.42 is: 231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.31 : 424.09 = 167.42 : x
  2. Step 2: Convert to fraction form
    307.31/424.09 = 167.42/x
  3. Step 3: Cross multiply
    307.31x = 424.09 × 167.42
  4. Step 4: Simplify right side
    307.31x = 71,001.79
  5. Step 5: Solve for x
    x = 71,001.79/307.31
  6. Step 6: Final answer
    x = 231.05

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