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Finding the Fourth Proportional to 22.13, 33 and 20.69

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Solution

The fourth proportional to 22.13, 33 and 20.69 is: 30.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.13 : 33 = 20.69 : x
  2. Step 2: Convert to fraction form
    22.13/33 = 20.69/x
  3. Step 3: Cross multiply
    22.13x = 33 × 20.69
  4. Step 4: Simplify right side
    22.13x = 682.77
  5. Step 5: Solve for x
    x = 682.77/22.13
  6. Step 6: Final answer
    x = 30.85

Related Problems

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Similar ratio
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1.5x scale

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.