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Finding the Fourth Proportional to 16.25, 24.38 and 5.56

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Solution

The fourth proportional to 16.25, 24.38 and 5.56 is: 8.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.25 : 24.38 = 5.56 : x
  2. Step 2: Convert to fraction form
    16.25/24.38 = 5.56/x
  3. Step 3: Cross multiply
    16.25x = 24.38 × 5.56
  4. Step 4: Simplify right side
    16.25x = 135.55
  5. Step 5: Solve for x
    x = 135.55/16.25
  6. Step 6: Final answer
    x = 8.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.