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Finding the Third Proportional to 20 and 45.63

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Solution

The third proportional to 20 and 45.63 is: 104.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20 : 45.63 = 45.63 : x
  2. Step 2: Convert to fraction form
    20/45.63 = 45.63/x
  3. Step 3: Cross multiply
    20x = 45.63 × 45.63
  4. Step 4: Simplify right side
    20x = 2,081.64
  5. Step 5: Solve for x
    x = 2,081.64/20
  6. Step 6: Final answer
    x = 104.08

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.