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Finding the Third Proportional to 35.50 and 77.75

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Solution

The third proportional to 35.50 and 77.75 is: 170.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.50 : 77.75 = 77.75 : x
  2. Step 2: Convert to fraction form
    35.50/77.75 = 77.75/x
  3. Step 3: Cross multiply
    35.50x = 77.75 × 77.75
  4. Step 4: Simplify right side
    35.50x = 6,045.06
  5. Step 5: Solve for x
    x = 6,045.06/35.50
  6. Step 6: Final answer
    x = 170.28

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.