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Finding the Fourth Proportional to 16, 22 and 14.40

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Solution

The fourth proportional to 16, 22 and 14.40 is: 19.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16 : 22 = 14.40 : x
  2. Step 2: Convert to fraction form
    16/22 = 14.40/x
  3. Step 3: Cross multiply
    16x = 22 × 14.40
  4. Step 4: Simplify right side
    16x = 316.80
  5. Step 5: Solve for x
    x = 316.80/16
  6. Step 6: Final answer
    x = 19.80

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.