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Finding the Fourth Proportional to 800.32, 1,104.12 and 626.20

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Solution

The fourth proportional to 800.32, 1,104.12 and 626.20 is: 863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.32 : 1,104.12 = 626.20 : x
  2. Step 2: Convert to fraction form
    800.32/1,104.12 = 626.20/x
  3. Step 3: Cross multiply
    800.32x = 1,104.12 × 626.20
  4. Step 4: Simplify right side
    800.32x = 691,399.94
  5. Step 5: Solve for x
    x = 691,399.94/800.32
  6. Step 6: Final answer
    x = 863.90

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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.