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Finding the Fourth Proportional to 283.25, 424.85 and 129.13

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Solution

The fourth proportional to 283.25, 424.85 and 129.13 is: 193.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.25 : 424.85 = 129.13 : x
  2. Step 2: Convert to fraction form
    283.25/424.85 = 129.13/x
  3. Step 3: Cross multiply
    283.25x = 424.85 × 129.13
  4. Step 4: Simplify right side
    283.25x = 54,860.88
  5. Step 5: Solve for x
    x = 54,860.88/283.25
  6. Step 6: Final answer
    x = 193.68

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