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Finding the Fourth Proportional to 6.79, 10.13 and 6.19

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Solution

The fourth proportional to 6.79, 10.13 and 6.19 is: 9.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.79 : 10.13 = 6.19 : x
  2. Step 2: Convert to fraction form
    6.79/10.13 = 6.19/x
  3. Step 3: Cross multiply
    6.79x = 10.13 × 6.19
  4. Step 4: Simplify right side
    6.79x = 62.70
  5. Step 5: Solve for x
    x = 62.70/6.79
  6. Step 6: Final answer
    x = 9.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.