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Finding the Fourth Proportional to 737.69, 1,018.19 and 443.14

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Solution

The fourth proportional to 737.69, 1,018.19 and 443.14 is: 611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.69 : 1,018.19 = 443.14 : x
  2. Step 2: Convert to fraction form
    737.69/1,018.19 = 443.14/x
  3. Step 3: Cross multiply
    737.69x = 1,018.19 × 443.14
  4. Step 4: Simplify right side
    737.69x = 451,199.28
  5. Step 5: Solve for x
    x = 451,199.28/737.69
  6. Step 6: Final answer
    x = 611.64

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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.