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Finding the Fourth Proportional to 797.43, 1,194.75 and 489.21

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Solution

The fourth proportional to 797.43, 1,194.75 and 489.21 is: 732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.43 : 1,194.75 = 489.21 : x
  2. Step 2: Convert to fraction form
    797.43/1,194.75 = 489.21/x
  3. Step 3: Cross multiply
    797.43x = 1,194.75 × 489.21
  4. Step 4: Simplify right side
    797.43x = 584,483.65
  5. Step 5: Solve for x
    x = 584,483.65/797.43
  6. Step 6: Final answer
    x = 732.96

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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.