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Finding the Fourth Proportional to 16.80, 25 and 16.62

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Solution

The fourth proportional to 16.80, 25 and 16.62 is: 24.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.80 : 25 = 16.62 : x
  2. Step 2: Convert to fraction form
    16.80/25 = 16.62/x
  3. Step 3: Cross multiply
    16.80x = 25 × 16.62
  4. Step 4: Simplify right side
    16.80x = 415.50
  5. Step 5: Solve for x
    x = 415.50/16.80
  6. Step 6: Final answer
    x = 24.73

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1.5x scale

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.