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Finding the Fourth Proportional to 40.76, 56.22 and 33.44

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Solution

The fourth proportional to 40.76, 56.22 and 33.44 is: 46.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.76 : 56.22 = 33.44 : x
  2. Step 2: Convert to fraction form
    40.76/56.22 = 33.44/x
  3. Step 3: Cross multiply
    40.76x = 56.22 × 33.44
  4. Step 4: Simplify right side
    40.76x = 1,880.00
  5. Step 5: Solve for x
    x = 1,880.00/40.76
  6. Step 6: Final answer
    x = 46.12

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Find fourth proportional to 20.38, 28.11 and 16.72
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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.