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Finding the Third Proportional to 449.93 and 981.41

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Solution

The third proportional to 449.93 and 981.41 is: 2,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.93 : 981.41 = 981.41 : x
  2. Step 2: Convert to fraction form
    449.93/981.41 = 981.41/x
  3. Step 3: Cross multiply
    449.93x = 981.41 × 981.41
  4. Step 4: Simplify right side
    449.93x = 963,171.65
  5. Step 5: Solve for x
    x = 963,171.65/449.93
  6. Step 6: Final answer
    x = 2,140.72

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.