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Finding the Fourth Proportional to 484.31, 668.37 and 274.52

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Solution

The fourth proportional to 484.31, 668.37 and 274.52 is: 378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.31 : 668.37 = 274.52 : x
  2. Step 2: Convert to fraction form
    484.31/668.37 = 274.52/x
  3. Step 3: Cross multiply
    484.31x = 668.37 × 274.52
  4. Step 4: Simplify right side
    484.31x = 183,477.59
  5. Step 5: Solve for x
    x = 183,477.59/484.31
  6. Step 6: Final answer
    x = 378.85

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