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Finding the Fourth Proportional to 797.26, 1,195.92 and 284.26

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Solution

The fourth proportional to 797.26, 1,195.92 and 284.26 is: 426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.26 : 1,195.92 = 284.26 : x
  2. Step 2: Convert to fraction form
    797.26/1,195.92 = 284.26/x
  3. Step 3: Cross multiply
    797.26x = 1,195.92 × 284.26
  4. Step 4: Simplify right side
    797.26x = 339,952.22
  5. Step 5: Solve for x
    x = 339,952.22/797.26
  6. Step 6: Final answer
    x = 426.40

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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.