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Finding the Fourth Proportional to 737.88, 1,018.13 and 443.09

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Solution

The fourth proportional to 737.88, 1,018.13 and 443.09 is: 611.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.88 : 1,018.13 = 443.09 : x
  2. Step 2: Convert to fraction form
    737.88/1,018.13 = 443.09/x
  3. Step 3: Cross multiply
    737.88x = 1,018.13 × 443.09
  4. Step 4: Simplify right side
    737.88x = 451,115.92
  5. Step 5: Solve for x
    x = 451,115.92/737.88
  6. Step 6: Final answer
    x = 611.37

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1.5x scale

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.