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Finding the Fourth Proportional to 263.12, 394.72 and 70.76

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Solution

The fourth proportional to 263.12, 394.72 and 70.76 is: 106.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.12 : 394.72 = 70.76 : x
  2. Step 2: Convert to fraction form
    263.12/394.72 = 70.76/x
  3. Step 3: Cross multiply
    263.12x = 394.72 × 70.76
  4. Step 4: Simplify right side
    263.12x = 27,930.39
  5. Step 5: Solve for x
    x = 27,930.39/263.12
  6. Step 6: Final answer
    x = 106.15

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