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Finding the Third Proportional to 646.10 and 1,383.33

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Solution

The third proportional to 646.10 and 1,383.33 is: 2,961.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.10 : 1,383.33 = 1,383.33 : x
  2. Step 2: Convert to fraction form
    646.10/1,383.33 = 1,383.33/x
  3. Step 3: Cross multiply
    646.10x = 1,383.33 × 1,383.33
  4. Step 4: Simplify right side
    646.10x = 1,913,596.70
  5. Step 5: Solve for x
    x = 1,913,596.70/646.10
  6. Step 6: Final answer
    x = 2,961.76

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.