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Finding the Fourth Proportional to 23.81, 32.83 and 15.05

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Solution

The fourth proportional to 23.81, 32.83 and 15.05 is: 20.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.81 : 32.83 = 15.05 : x
  2. Step 2: Convert to fraction form
    23.81/32.83 = 15.05/x
  3. Step 3: Cross multiply
    23.81x = 32.83 × 15.05
  4. Step 4: Simplify right side
    23.81x = 494.14
  5. Step 5: Solve for x
    x = 494.14/23.81
  6. Step 6: Final answer
    x = 20.76

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Why These Related Problems?

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