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Finding the Third Proportional to 324.98 and 429.68

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Solution

The third proportional to 324.98 and 429.68 is: 568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.98 : 429.68 = 429.68 : x
  2. Step 2: Convert to fraction form
    324.98/429.68 = 429.68/x
  3. Step 3: Cross multiply
    324.98x = 429.68 × 429.68
  4. Step 4: Simplify right side
    324.98x = 184,624.63
  5. Step 5: Solve for x
    x = 184,624.63/324.98
  6. Step 6: Final answer
    x = 568.10

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.