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Finding the Third Proportional to 19 and 23.19

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Solution

The third proportional to 19 and 23.19 is: 28.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19 : 23.19 = 23.19 : x
  2. Step 2: Convert to fraction form
    19/23.19 = 23.19/x
  3. Step 3: Cross multiply
    19x = 23.19 × 23.19
  4. Step 4: Simplify right side
    19x = 537.66
  5. Step 5: Solve for x
    x = 537.66/19
  6. Step 6: Final answer
    x = 28.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.