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Finding the Fourth Proportional to 797.67, 1,196.45 and 489.57

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Solution

The fourth proportional to 797.67, 1,196.45 and 489.57 is: 734.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.67 : 1,196.45 = 489.57 : x
  2. Step 2: Convert to fraction form
    797.67/1,196.45 = 489.57/x
  3. Step 3: Cross multiply
    797.67x = 1,196.45 × 489.57
  4. Step 4: Simplify right side
    797.67x = 585,746.03
  5. Step 5: Solve for x
    x = 585,746.03/797.67
  6. Step 6: Final answer
    x = 734.32

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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.