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Finding the Fourth Proportional to 748.04, 1,121.85 and 260.96

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Solution

The fourth proportional to 748.04, 1,121.85 and 260.96 is: 391.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.04 : 1,121.85 = 260.96 : x
  2. Step 2: Convert to fraction form
    748.04/1,121.85 = 260.96/x
  3. Step 3: Cross multiply
    748.04x = 1,121.85 × 260.96
  4. Step 4: Simplify right side
    748.04x = 292,752.37
  5. Step 5: Solve for x
    x = 292,752.37/748.04
  6. Step 6: Final answer
    x = 391.36

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