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Finding the Fourth Proportional to 25.61, 38.61 and 22.03

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Solution

The fourth proportional to 25.61, 38.61 and 22.03 is: 33.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.61 : 38.61 = 22.03 : x
  2. Step 2: Convert to fraction form
    25.61/38.61 = 22.03/x
  3. Step 3: Cross multiply
    25.61x = 38.61 × 22.03
  4. Step 4: Simplify right side
    25.61x = 850.53
  5. Step 5: Solve for x
    x = 850.53/25.61
  6. Step 6: Final answer
    x = 33.21

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.