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Finding the Third Proportional to 306.63 and 650.88

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Solution

The third proportional to 306.63 and 650.88 is: 1,381.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.63 : 650.88 = 650.88 : x
  2. Step 2: Convert to fraction form
    306.63/650.88 = 650.88/x
  3. Step 3: Cross multiply
    306.63x = 650.88 × 650.88
  4. Step 4: Simplify right side
    306.63x = 423,638.27
  5. Step 5: Solve for x
    x = 423,638.27/306.63
  6. Step 6: Final answer
    x = 1,381.62

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.