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Finding the Third Proportional to 4.18 and 9.17

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Solution

The third proportional to 4.18 and 9.17 is: 20.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.18 : 9.17 = 9.17 : x
  2. Step 2: Convert to fraction form
    4.18/9.17 = 9.17/x
  3. Step 3: Cross multiply
    4.18x = 9.17 × 9.17
  4. Step 4: Simplify right side
    4.18x = 84.01
  5. Step 5: Solve for x
    x = 84.01/4.18
  6. Step 6: Final answer
    x = 20.09

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1.5x scale

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.