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Finding the Third Proportional to 298.13 and 435.66

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Solution

The third proportional to 298.13 and 435.66 is: 636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.13 : 435.66 = 435.66 : x
  2. Step 2: Convert to fraction form
    298.13/435.66 = 435.66/x
  3. Step 3: Cross multiply
    298.13x = 435.66 × 435.66
  4. Step 4: Simplify right side
    298.13x = 189,796.37
  5. Step 5: Solve for x
    x = 189,796.37/298.13
  6. Step 6: Final answer
    x = 636.63

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.