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Finding the Fourth Proportional to 737.69, 1,105.56 and 411.44

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Solution

The fourth proportional to 737.69, 1,105.56 and 411.44 is: 616.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.69 : 1,105.56 = 411.44 : x
  2. Step 2: Convert to fraction form
    737.69/1,105.56 = 411.44/x
  3. Step 3: Cross multiply
    737.69x = 1,105.56 × 411.44
  4. Step 4: Simplify right side
    737.69x = 454,866.08
  5. Step 5: Solve for x
    x = 454,866.08/737.69
  6. Step 6: Final answer
    x = 616.61

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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.