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Finding the Fourth Proportional to 674.27, 1,011.64 and 443.27

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Solution

The fourth proportional to 674.27, 1,011.64 and 443.27 is: 665.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.27 : 1,011.64 = 443.27 : x
  2. Step 2: Convert to fraction form
    674.27/1,011.64 = 443.27/x
  3. Step 3: Cross multiply
    674.27x = 1,011.64 × 443.27
  4. Step 4: Simplify right side
    674.27x = 448,431.08
  5. Step 5: Solve for x
    x = 448,431.08/674.27
  6. Step 6: Final answer
    x = 665.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.