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Finding the Fourth Proportional to 103.11, 154.63 and 30.97

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Solution

The fourth proportional to 103.11, 154.63 and 30.97 is: 46.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.11 : 154.63 = 30.97 : x
  2. Step 2: Convert to fraction form
    103.11/154.63 = 30.97/x
  3. Step 3: Cross multiply
    103.11x = 154.63 × 30.97
  4. Step 4: Simplify right side
    103.11x = 4,788.89
  5. Step 5: Solve for x
    x = 4,788.89/103.11
  6. Step 6: Final answer
    x = 46.44

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