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Finding the Fourth Proportional to 308.88, 425.73 and 282.73

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Solution

The fourth proportional to 308.88, 425.73 and 282.73 is: 389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.88 : 425.73 = 282.73 : x
  2. Step 2: Convert to fraction form
    308.88/425.73 = 282.73/x
  3. Step 3: Cross multiply
    308.88x = 425.73 × 282.73
  4. Step 4: Simplify right side
    308.88x = 120,366.64
  5. Step 5: Solve for x
    x = 120,366.64/308.88
  6. Step 6: Final answer
    x = 389.68

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