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Finding the Fourth Proportional to 737.74, 1,018.56 and 443.10

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Solution

The fourth proportional to 737.74, 1,018.56 and 443.10 is: 611.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.74 : 1,018.56 = 443.10 : x
  2. Step 2: Convert to fraction form
    737.74/1,018.56 = 443.10/x
  3. Step 3: Cross multiply
    737.74x = 1,018.56 × 443.10
  4. Step 4: Simplify right side
    737.74x = 451,323.94
  5. Step 5: Solve for x
    x = 451,323.94/737.74
  6. Step 6: Final answer
    x = 611.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.