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Finding the Fourth Proportional to 8.13, 11.22 and 5.25

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Solution

The fourth proportional to 8.13, 11.22 and 5.25 is: 7.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.13 : 11.22 = 5.25 : x
  2. Step 2: Convert to fraction form
    8.13/11.22 = 5.25/x
  3. Step 3: Cross multiply
    8.13x = 11.22 × 5.25
  4. Step 4: Simplify right side
    8.13x = 58.88
  5. Step 5: Solve for x
    x = 58.88/8.13
  6. Step 6: Final answer
    x = 7.25

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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.