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Finding the Fourth Proportional to 40.08, 60.36 and 33.70

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Solution

The fourth proportional to 40.08, 60.36 and 33.70 is: 50.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.08 : 60.36 = 33.70 : x
  2. Step 2: Convert to fraction form
    40.08/60.36 = 33.70/x
  3. Step 3: Cross multiply
    40.08x = 60.36 × 33.70
  4. Step 4: Simplify right side
    40.08x = 2,034.48
  5. Step 5: Solve for x
    x = 2,034.48/40.08
  6. Step 6: Final answer
    x = 50.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.