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Finding the Fourth Proportional to 16.73, 23.20 and 16.40

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Solution

The fourth proportional to 16.73, 23.20 and 16.40 is: 22.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.73 : 23.20 = 16.40 : x
  2. Step 2: Convert to fraction form
    16.73/23.20 = 16.40/x
  3. Step 3: Cross multiply
    16.73x = 23.20 × 16.40
  4. Step 4: Simplify right side
    16.73x = 380.40
  5. Step 5: Solve for x
    x = 380.40/16.73
  6. Step 6: Final answer
    x = 22.74

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.