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Finding the Fourth Proportional to 800.25, 1,104.42 and 451.01

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Solution

The fourth proportional to 800.25, 1,104.42 and 451.01 is: 622.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.25 : 1,104.42 = 451.01 : x
  2. Step 2: Convert to fraction form
    800.25/1,104.42 = 451.01/x
  3. Step 3: Cross multiply
    800.25x = 1,104.42 × 451.01
  4. Step 4: Simplify right side
    800.25x = 498,098.94
  5. Step 5: Solve for x
    x = 498,098.94/800.25
  6. Step 6: Final answer
    x = 622.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.