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Finding the Third Proportional to 329.88 and 712.63

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Solution

The third proportional to 329.88 and 712.63 is: 1,539.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.88 : 712.63 = 712.63 : x
  2. Step 2: Convert to fraction form
    329.88/712.63 = 712.63/x
  3. Step 3: Cross multiply
    329.88x = 712.63 × 712.63
  4. Step 4: Simplify right side
    329.88x = 507,834.39
  5. Step 5: Solve for x
    x = 507,834.39/329.88
  6. Step 6: Final answer
    x = 1,539.48

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.