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Finding the Fourth Proportional to 737.80, 1,018.74 and 443.46

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Solution

The fourth proportional to 737.80, 1,018.74 and 443.46 is: 612.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.80 : 1,018.74 = 443.46 : x
  2. Step 2: Convert to fraction form
    737.80/1,018.74 = 443.46/x
  3. Step 3: Cross multiply
    737.80x = 1,018.74 × 443.46
  4. Step 4: Simplify right side
    737.80x = 451,770.44
  5. Step 5: Solve for x
    x = 451,770.44/737.80
  6. Step 6: Final answer
    x = 612.32

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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.