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Finding the Fourth Proportional to 733.26, 1,099.53 and 489.66

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Solution

The fourth proportional to 733.26, 1,099.53 and 489.66 is: 734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.26 : 1,099.53 = 489.66 : x
  2. Step 2: Convert to fraction form
    733.26/1,099.53 = 489.66/x
  3. Step 3: Cross multiply
    733.26x = 1,099.53 × 489.66
  4. Step 4: Simplify right side
    733.26x = 538,395.86
  5. Step 5: Solve for x
    x = 538,395.86/733.26
  6. Step 6: Final answer
    x = 734.25

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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.