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Finding the Third Proportional to 298.13 and 494.81

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Solution

The third proportional to 298.13 and 494.81 is: 821.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.13 : 494.81 = 494.81 : x
  2. Step 2: Convert to fraction form
    298.13/494.81 = 494.81/x
  3. Step 3: Cross multiply
    298.13x = 494.81 × 494.81
  4. Step 4: Simplify right side
    298.13x = 244,839.41
  5. Step 5: Solve for x
    x = 244,839.41/298.13
  6. Step 6: Final answer
    x = 821.26

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.