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Finding the Fourth Proportional to 844.68, 1,266.86 and 324.38

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Solution

The fourth proportional to 844.68, 1,266.86 and 324.38 is: 486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.68 : 1,266.86 = 324.38 : x
  2. Step 2: Convert to fraction form
    844.68/1,266.86 = 324.38/x
  3. Step 3: Cross multiply
    844.68x = 1,266.86 × 324.38
  4. Step 4: Simplify right side
    844.68x = 410,944.05
  5. Step 5: Solve for x
    x = 410,944.05/844.68
  6. Step 6: Final answer
    x = 486.51

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Double scale
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1.5x scale

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.