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Finding the Fourth Proportional to 9.01, 13.51 and 3.94

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Solution

The fourth proportional to 9.01, 13.51 and 3.94 is: 5.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.01 : 13.51 = 3.94 : x
  2. Step 2: Convert to fraction form
    9.01/13.51 = 3.94/x
  3. Step 3: Cross multiply
    9.01x = 13.51 × 3.94
  4. Step 4: Simplify right side
    9.01x = 53.20
  5. Step 5: Solve for x
    x = 53.20/9.01
  6. Step 6: Final answer
    x = 5.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.