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Finding the Third Proportional to 626.25 and 921.19

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Solution

The third proportional to 626.25 and 921.19 is: 1,355.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.25 : 921.19 = 921.19 : x
  2. Step 2: Convert to fraction form
    626.25/921.19 = 921.19/x
  3. Step 3: Cross multiply
    626.25x = 921.19 × 921.19
  4. Step 4: Simplify right side
    626.25x = 848,586.41
  5. Step 5: Solve for x
    x = 848,586.41/626.25
  6. Step 6: Final answer
    x = 1,355.03

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.