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Finding the Fourth Proportional to 7.44, 10.23 and 6.86

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Solution

The fourth proportional to 7.44, 10.23 and 6.86 is: 9.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.44 : 10.23 = 6.86 : x
  2. Step 2: Convert to fraction form
    7.44/10.23 = 6.86/x
  3. Step 3: Cross multiply
    7.44x = 10.23 × 6.86
  4. Step 4: Simplify right side
    7.44x = 70.14
  5. Step 5: Solve for x
    x = 70.14/7.44
  6. Step 6: Final answer
    x = 9.43

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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.