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Finding the Third Proportional to 653.25 and 673.50

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Solution

The third proportional to 653.25 and 673.50 is: 694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.25 : 673.50 = 673.50 : x
  2. Step 2: Convert to fraction form
    653.25/673.50 = 673.50/x
  3. Step 3: Cross multiply
    653.25x = 673.50 × 673.50
  4. Step 4: Simplify right side
    653.25x = 453,602.25
  5. Step 5: Solve for x
    x = 453,602.25/653.25
  6. Step 6: Final answer
    x = 694.38

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Why These Related Problems?

These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.