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Finding the Third Proportional to 1.00 and 2.19

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Solution

The third proportional to 1.00 and 2.19 is: 4.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.00 : 2.19 = 2.19 : x
  2. Step 2: Convert to fraction form
    1.00/2.19 = 2.19/x
  3. Step 3: Cross multiply
    1.00x = 2.19 × 2.19
  4. Step 4: Simplify right side
    1.00x = 4.79
  5. Step 5: Solve for x
    x = 4.79/1.00
  6. Step 6: Final answer
    x = 4.78

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.