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Finding the Third Proportional to 287.44 and 543.38

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Solution

The third proportional to 287.44 and 543.38 is: 1,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.44 : 543.38 = 543.38 : x
  2. Step 2: Convert to fraction form
    287.44/543.38 = 543.38/x
  3. Step 3: Cross multiply
    287.44x = 543.38 × 543.38
  4. Step 4: Simplify right side
    287.44x = 295,256.39
  5. Step 5: Solve for x
    x = 295,256.39/287.44
  6. Step 6: Final answer
    x = 1,027.20

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.