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Finding the Third Proportional to 287.30 and 606.23

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Solution

The third proportional to 287.30 and 606.23 is: 1,279.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.30 : 606.23 = 606.23 : x
  2. Step 2: Convert to fraction form
    287.30/606.23 = 606.23/x
  3. Step 3: Cross multiply
    287.30x = 606.23 × 606.23
  4. Step 4: Simplify right side
    287.30x = 367,520.12
  5. Step 5: Solve for x
    x = 367,520.12/287.30
  6. Step 6: Final answer
    x = 1,279.23

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.