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Finding the Third Proportional to 193.75 and 290.56

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Solution

The third proportional to 193.75 and 290.56 is: 435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.75 : 290.56 = 290.56 : x
  2. Step 2: Convert to fraction form
    193.75/290.56 = 290.56/x
  3. Step 3: Cross multiply
    193.75x = 290.56 × 290.56
  4. Step 4: Simplify right side
    193.75x = 84,426.57
  5. Step 5: Solve for x
    x = 84,426.57/193.75
  6. Step 6: Final answer
    x = 435.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.