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Finding the Fourth Proportional to 9.97, 15.02 and 8.85

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Solution

The fourth proportional to 9.97, 15.02 and 8.85 is: 13.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.97 : 15.02 = 8.85 : x
  2. Step 2: Convert to fraction form
    9.97/15.02 = 8.85/x
  3. Step 3: Cross multiply
    9.97x = 15.02 × 8.85
  4. Step 4: Simplify right side
    9.97x = 132.93
  5. Step 5: Solve for x
    x = 132.93/9.97
  6. Step 6: Final answer
    x = 13.33

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1.5x scale

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.