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Finding the Third Proportional to 429 and 608

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Solution

The third proportional to 429 and 608 is: 861.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    429 : 608 = 608 : x
  2. Step 2: Convert to fraction form
    429/608 = 608/x
  3. Step 3: Cross multiply
    429x = 608 × 608
  4. Step 4: Simplify right side
    429x = 369,664
  5. Step 5: Solve for x
    x = 369,664/429
  6. Step 6: Final answer
    x = 861.69

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.