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Finding the Fourth Proportional to 6.14, 8.42 and 5.81

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Solution

The fourth proportional to 6.14, 8.42 and 5.81 is: 7.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.14 : 8.42 = 5.81 : x
  2. Step 2: Convert to fraction form
    6.14/8.42 = 5.81/x
  3. Step 3: Cross multiply
    6.14x = 8.42 × 5.81
  4. Step 4: Simplify right side
    6.14x = 48.92
  5. Step 5: Solve for x
    x = 48.92/6.14
  6. Step 6: Final answer
    x = 7.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.