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Finding the Fourth Proportional to 8.03, 12.11 and 7.99

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Solution

The fourth proportional to 8.03, 12.11 and 7.99 is: 12.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.03 : 12.11 = 7.99 : x
  2. Step 2: Convert to fraction form
    8.03/12.11 = 7.99/x
  3. Step 3: Cross multiply
    8.03x = 12.11 × 7.99
  4. Step 4: Simplify right side
    8.03x = 96.76
  5. Step 5: Solve for x
    x = 96.76/8.03
  6. Step 6: Final answer
    x = 12.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.