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Finding the Fourth Proportional to 733.42, 1,100.10 and 489.79

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Solution

The fourth proportional to 733.42, 1,100.10 and 489.79 is: 734.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.42 : 1,100.10 = 489.79 : x
  2. Step 2: Convert to fraction form
    733.42/1,100.10 = 489.79/x
  3. Step 3: Cross multiply
    733.42x = 1,100.10 × 489.79
  4. Step 4: Simplify right side
    733.42x = 538,817.98
  5. Step 5: Solve for x
    x = 538,817.98/733.42
  6. Step 6: Final answer
    x = 734.66

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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.