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Finding the Fourth Proportional to 800.39, 1,104.57 and 451.10

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Solution

The fourth proportional to 800.39, 1,104.57 and 451.10 is: 622.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.39 : 1,104.57 = 451.10 : x
  2. Step 2: Convert to fraction form
    800.39/1,104.57 = 451.10/x
  3. Step 3: Cross multiply
    800.39x = 1,104.57 × 451.10
  4. Step 4: Simplify right side
    800.39x = 498,271.53
  5. Step 5: Solve for x
    x = 498,271.53/800.39
  6. Step 6: Final answer
    x = 622.54

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Half scale
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Double scale
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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.