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Finding the Third Proportional to 538.75 and 824.38

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Solution

The third proportional to 538.75 and 824.38 is: 1,261.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.75 : 824.38 = 824.38 : x
  2. Step 2: Convert to fraction form
    538.75/824.38 = 824.38/x
  3. Step 3: Cross multiply
    538.75x = 824.38 × 824.38
  4. Step 4: Simplify right side
    538.75x = 679,594.14
  5. Step 5: Solve for x
    x = 679,594.14/538.75
  6. Step 6: Final answer
    x = 1,261.43

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.