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Finding the Fourth Proportional to 16.32, 24.31 and 15.84

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Solution

The fourth proportional to 16.32, 24.31 and 15.84 is: 23.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.32 : 24.31 = 15.84 : x
  2. Step 2: Convert to fraction form
    16.32/24.31 = 15.84/x
  3. Step 3: Cross multiply
    16.32x = 24.31 × 15.84
  4. Step 4: Simplify right side
    16.32x = 384.99
  5. Step 5: Solve for x
    x = 384.99/16.32
  6. Step 6: Final answer
    x = 23.59

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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.