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Finding the Fourth Proportional to 18.94, 25.99 and 17.43

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Solution

The fourth proportional to 18.94, 25.99 and 17.43 is: 23.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.94 : 25.99 = 17.43 : x
  2. Step 2: Convert to fraction form
    18.94/25.99 = 17.43/x
  3. Step 3: Cross multiply
    18.94x = 25.99 × 17.43
  4. Step 4: Simplify right side
    18.94x = 453.01
  5. Step 5: Solve for x
    x = 453.01/18.94
  6. Step 6: Final answer
    x = 23.92

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.