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Finding the Third Proportional to 421 and 598

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Solution

The third proportional to 421 and 598 is: 849.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    421 : 598 = 598 : x
  2. Step 2: Convert to fraction form
    421/598 = 598/x
  3. Step 3: Cross multiply
    421x = 598 × 598
  4. Step 4: Simplify right side
    421x = 357,604
  5. Step 5: Solve for x
    x = 357,604/421
  6. Step 6: Final answer
    x = 849.42

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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.