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Finding the Fourth Proportional to 16.73, 25.00 and 13.31

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Solution

The fourth proportional to 16.73, 25.00 and 13.31 is: 19.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.73 : 25.00 = 13.31 : x
  2. Step 2: Convert to fraction form
    16.73/25.00 = 13.31/x
  3. Step 3: Cross multiply
    16.73x = 25.00 × 13.31
  4. Step 4: Simplify right side
    16.73x = 332.85
  5. Step 5: Solve for x
    x = 332.85/16.73
  6. Step 6: Final answer
    x = 19.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.