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Finding the Third Proportional to 161.44 and 412.88

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Solution

The third proportional to 161.44 and 412.88 is: 1,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.44 : 412.88 = 412.88 : x
  2. Step 2: Convert to fraction form
    161.44/412.88 = 412.88/x
  3. Step 3: Cross multiply
    161.44x = 412.88 × 412.88
  4. Step 4: Simplify right side
    161.44x = 170,465.77
  5. Step 5: Solve for x
    x = 170,465.77/161.44
  6. Step 6: Final answer
    x = 1,055.92

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.