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Finding the Fourth Proportional to 281.99, 422.51 and 200.43

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Solution

The fourth proportional to 281.99, 422.51 and 200.43 is: 300.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.99 : 422.51 = 200.43 : x
  2. Step 2: Convert to fraction form
    281.99/422.51 = 200.43/x
  3. Step 3: Cross multiply
    281.99x = 422.51 × 200.43
  4. Step 4: Simplify right side
    281.99x = 84,683.68
  5. Step 5: Solve for x
    x = 84,683.68/281.99
  6. Step 6: Final answer
    x = 300.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.