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Finding the Fourth Proportional to 608.43, 911.30 and 282.81

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Solution

The fourth proportional to 608.43, 911.30 and 282.81 is: 423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.43 : 911.30 = 282.81 : x
  2. Step 2: Convert to fraction form
    608.43/911.30 = 282.81/x
  3. Step 3: Cross multiply
    608.43x = 911.30 × 282.81
  4. Step 4: Simplify right side
    608.43x = 257,723.34
  5. Step 5: Solve for x
    x = 257,723.34/608.43
  6. Step 6: Final answer
    x = 423.59

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