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Finding the Third Proportional to 2.16 and 2.94

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Solution

The third proportional to 2.16 and 2.94 is: 3.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.16 : 2.94 = 2.94 : x
  2. Step 2: Convert to fraction form
    2.16/2.94 = 2.94/x
  3. Step 3: Cross multiply
    2.16x = 2.94 × 2.94
  4. Step 4: Simplify right side
    2.16x = 8.64
  5. Step 5: Solve for x
    x = 8.64/2.16
  6. Step 6: Final answer
    x = 3.99

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.