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Finding the Fourth Proportional to 9.05, 13.51 and 8.96

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Solution

The fourth proportional to 9.05, 13.51 and 8.96 is: 13.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.05 : 13.51 = 8.96 : x
  2. Step 2: Convert to fraction form
    9.05/13.51 = 8.96/x
  3. Step 3: Cross multiply
    9.05x = 13.51 × 8.96
  4. Step 4: Simplify right side
    9.05x = 121.05
  5. Step 5: Solve for x
    x = 121.05/9.05
  6. Step 6: Final answer
    x = 13.38

Related Problems

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Double scale
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Similar ratio
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1.5x scale

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.