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Finding the Third Proportional to 673.75 and 910.25

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Solution

The third proportional to 673.75 and 910.25 is: 1,229.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.75 : 910.25 = 910.25 : x
  2. Step 2: Convert to fraction form
    673.75/910.25 = 910.25/x
  3. Step 3: Cross multiply
    673.75x = 910.25 × 910.25
  4. Step 4: Simplify right side
    673.75x = 828,555.06
  5. Step 5: Solve for x
    x = 828,555.06/673.75
  6. Step 6: Final answer
    x = 1,229.77

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.