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Finding the Third Proportional to 543.09 and 981.56

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Solution

The third proportional to 543.09 and 981.56 is: 1,774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.09 : 981.56 = 981.56 : x
  2. Step 2: Convert to fraction form
    543.09/981.56 = 981.56/x
  3. Step 3: Cross multiply
    543.09x = 981.56 × 981.56
  4. Step 4: Simplify right side
    543.09x = 963,464.94
  5. Step 5: Solve for x
    x = 963,464.94/543.09
  6. Step 6: Final answer
    x = 1,774.03

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.