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Finding the Third Proportional to 434 and 484

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Solution

The third proportional to 434 and 484 is: 539.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    434 : 484 = 484 : x
  2. Step 2: Convert to fraction form
    434/484 = 484/x
  3. Step 3: Cross multiply
    434x = 484 × 484
  4. Step 4: Simplify right side
    434x = 234,256
  5. Step 5: Solve for x
    x = 234,256/434
  6. Step 6: Final answer
    x = 539.76

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Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.