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Finding the Fourth Proportional to 17.47, 23.90 and 17.39

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Solution

The fourth proportional to 17.47, 23.90 and 17.39 is: 23.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.47 : 23.90 = 17.39 : x
  2. Step 2: Convert to fraction form
    17.47/23.90 = 17.39/x
  3. Step 3: Cross multiply
    17.47x = 23.90 × 17.39
  4. Step 4: Simplify right side
    17.47x = 415.53
  5. Step 5: Solve for x
    x = 415.53/17.47
  6. Step 6: Final answer
    x = 23.79

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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.