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Finding the Third Proportional to 329.63 and 717.38

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Solution

The third proportional to 329.63 and 717.38 is: 1,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.63 : 717.38 = 717.38 : x
  2. Step 2: Convert to fraction form
    329.63/717.38 = 717.38/x
  3. Step 3: Cross multiply
    329.63x = 717.38 × 717.38
  4. Step 4: Simplify right side
    329.63x = 514,626.89
  5. Step 5: Solve for x
    x = 514,626.89/329.63
  6. Step 6: Final answer
    x = 1,561.25

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.