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Finding the Fourth Proportional to 737.81, 1,018.19 and 443.09

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Solution

The fourth proportional to 737.81, 1,018.19 and 443.09 is: 611.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.81 : 1,018.19 = 443.09 : x
  2. Step 2: Convert to fraction form
    737.81/1,018.19 = 443.09/x
  3. Step 3: Cross multiply
    737.81x = 1,018.19 × 443.09
  4. Step 4: Simplify right side
    737.81x = 451,145.24
  5. Step 5: Solve for x
    x = 451,145.24/737.81
  6. Step 6: Final answer
    x = 611.46

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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.