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Finding the Fourth Proportional to 7.20, 9.41 and 7.20

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Solution

The fourth proportional to 7.20, 9.41 and 7.20 is: 9.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.20 : 9.41 = 7.20 : x
  2. Step 2: Convert to fraction form
    7.20/9.41 = 7.20/x
  3. Step 3: Cross multiply
    7.20x = 9.41 × 7.20
  4. Step 4: Simplify right side
    7.20x = 67.75
  5. Step 5: Solve for x
    x = 67.75/7.20
  6. Step 6: Final answer
    x = 9.41

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.