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Finding the Third Proportional to 646.25 and 1,015.25

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Solution

The third proportional to 646.25 and 1,015.25 is: 1,594.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.25 : 1,015.25 = 1,015.25 : x
  2. Step 2: Convert to fraction form
    646.25/1,015.25 = 1,015.25/x
  3. Step 3: Cross multiply
    646.25x = 1,015.25 × 1,015.25
  4. Step 4: Simplify right side
    646.25x = 1,030,732.56
  5. Step 5: Solve for x
    x = 1,030,732.56/646.25
  6. Step 6: Final answer
    x = 1,594.94

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.