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Finding the Third Proportional to 34.65 and 74.51

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Solution

The third proportional to 34.65 and 74.51 is: 160.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.65 : 74.51 = 74.51 : x
  2. Step 2: Convert to fraction form
    34.65/74.51 = 74.51/x
  3. Step 3: Cross multiply
    34.65x = 74.51 × 74.51
  4. Step 4: Simplify right side
    34.65x = 5,552.29
  5. Step 5: Solve for x
    x = 5,552.29/34.65
  6. Step 6: Final answer
    x = 160.26

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.