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Finding the Fourth Proportional to 16, 24 and 5.31

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Solution

The fourth proportional to 16, 24 and 5.31 is: 7.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    16 : 24 = 5.31 : x
  2. Step 2: Convert to fraction form
    16/24 = 5.31/x
  3. Step 3: Cross multiply
    16x = 24 × 5.31
  4. Step 4: Simplify right side
    16x = 127.44
  5. Step 5: Solve for x
    x = 127.44/16
  6. Step 6: Final answer
    x = 7.97

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Double scale
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Similar ratio
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1.5x scale

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.