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Finding the Third Proportional to 4 and 4.91

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Solution

The third proportional to 4 and 4.91 is: 6.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4 : 4.91 = 4.91 : x
  2. Step 2: Convert to fraction form
    4/4.91 = 4.91/x
  3. Step 3: Cross multiply
    4x = 4.91 × 4.91
  4. Step 4: Simplify right side
    4x = 24.07
  5. Step 5: Solve for x
    x = 24.07/4
  6. Step 6: Final answer
    x = 6.02

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Why These Related Problems?

These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.