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Finding the Third Proportional to 543.38 and 776.46

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Solution

The third proportional to 543.38 and 776.46 is: 1,109.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.38 : 776.46 = 776.46 : x
  2. Step 2: Convert to fraction form
    543.38/776.46 = 776.46/x
  3. Step 3: Cross multiply
    543.38x = 776.46 × 776.46
  4. Step 4: Simplify right side
    543.38x = 602,891.59
  5. Step 5: Solve for x
    x = 602,891.59/543.38
  6. Step 6: Final answer
    x = 1,109.53

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.