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Finding the Third Proportional to 208.69 and 302.06

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Solution

The third proportional to 208.69 and 302.06 is: 437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.69 : 302.06 = 302.06 : x
  2. Step 2: Convert to fraction form
    208.69/302.06 = 302.06/x
  3. Step 3: Cross multiply
    208.69x = 302.06 × 302.06
  4. Step 4: Simplify right side
    208.69x = 91,241.75
  5. Step 5: Solve for x
    x = 91,241.75/208.69
  6. Step 6: Final answer
    x = 437.22

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.