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Finding the Fourth Proportional to 28.92, 43.39 and 26.99

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Solution

The fourth proportional to 28.92, 43.39 and 26.99 is: 40.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.92 : 43.39 = 26.99 : x
  2. Step 2: Convert to fraction form
    28.92/43.39 = 26.99/x
  3. Step 3: Cross multiply
    28.92x = 43.39 × 26.99
  4. Step 4: Simplify right side
    28.92x = 1,170.91
  5. Step 5: Solve for x
    x = 1,170.91/28.92
  6. Step 6: Final answer
    x = 40.49

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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.