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Finding the Fourth Proportional to 13.02, 17.97 and 7.20

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Solution

The fourth proportional to 13.02, 17.97 and 7.20 is: 9.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.02 : 17.97 = 7.20 : x
  2. Step 2: Convert to fraction form
    13.02/17.97 = 7.20/x
  3. Step 3: Cross multiply
    13.02x = 17.97 × 7.20
  4. Step 4: Simplify right side
    13.02x = 129.31
  5. Step 5: Solve for x
    x = 129.31/13.02
  6. Step 6: Final answer
    x = 9.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.