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Finding the Third Proportional to 981 and 1,330.88

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Solution

The third proportional to 981 and 1,330.88 is: 1,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    981 : 1,330.88 = 1,330.88 : x
  2. Step 2: Convert to fraction form
    981/1,330.88 = 1,330.88/x
  3. Step 3: Cross multiply
    981x = 1,330.88 × 1,330.88
  4. Step 4: Simplify right side
    981x = 1,771,228.27
  5. Step 5: Solve for x
    x = 1,771,228.27/981
  6. Step 6: Final answer
    x = 1,805.53

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.