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Finding the Third Proportional to 321 and 464

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Solution

The third proportional to 321 and 464 is: 670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321 : 464 = 464 : x
  2. Step 2: Convert to fraction form
    321/464 = 464/x
  3. Step 3: Cross multiply
    321x = 464 × 464
  4. Step 4: Simplify right side
    321x = 215,296
  5. Step 5: Solve for x
    x = 215,296/321
  6. Step 6: Final answer
    x = 670.70

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.