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Finding the Fourth Proportional to 589.09, 883.89 and 280.95

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Solution

The fourth proportional to 589.09, 883.89 and 280.95 is: 421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.09 : 883.89 = 280.95 : x
  2. Step 2: Convert to fraction form
    589.09/883.89 = 280.95/x
  3. Step 3: Cross multiply
    589.09x = 883.89 × 280.95
  4. Step 4: Simplify right side
    589.09x = 248,324.48
  5. Step 5: Solve for x
    x = 248,324.48/589.09
  6. Step 6: Final answer
    x = 421.54

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