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Finding the Fourth Proportional to 737.75, 1,018.15 and 443.03

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Solution

The fourth proportional to 737.75, 1,018.15 and 443.03 is: 611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.75 : 1,018.15 = 443.03 : x
  2. Step 2: Convert to fraction form
    737.75/1,018.15 = 443.03/x
  3. Step 3: Cross multiply
    737.75x = 1,018.15 × 443.03
  4. Step 4: Simplify right side
    737.75x = 451,064.80
  5. Step 5: Solve for x
    x = 451,064.80/737.75
  6. Step 6: Final answer
    x = 611.40

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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.