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Finding the Third Proportional to 464 and 639

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Solution

The third proportional to 464 and 639 is: 880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    464 : 639 = 639 : x
  2. Step 2: Convert to fraction form
    464/639 = 639/x
  3. Step 3: Cross multiply
    464x = 639 × 639
  4. Step 4: Simplify right side
    464x = 408,321
  5. Step 5: Solve for x
    x = 408,321/464
  6. Step 6: Final answer
    x = 880.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.