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Finding the Third Proportional to 302.20 and 709.73

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Solution

The third proportional to 302.20 and 709.73 is: 1,666.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.20 : 709.73 = 709.73 : x
  2. Step 2: Convert to fraction form
    302.20/709.73 = 709.73/x
  3. Step 3: Cross multiply
    302.20x = 709.73 × 709.73
  4. Step 4: Simplify right side
    302.20x = 503,722.88
  5. Step 5: Solve for x
    x = 503,722.88/302.20
  6. Step 6: Final answer
    x = 1,666.84

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.