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Finding the Fourth Proportional to 40.09, 55.17 and 35.50

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Solution

The fourth proportional to 40.09, 55.17 and 35.50 is: 48.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.09 : 55.17 = 35.50 : x
  2. Step 2: Convert to fraction form
    40.09/55.17 = 35.50/x
  3. Step 3: Cross multiply
    40.09x = 55.17 × 35.50
  4. Step 4: Simplify right side
    40.09x = 1,958.54
  5. Step 5: Solve for x
    x = 1,958.54/40.09
  6. Step 6: Final answer
    x = 48.85

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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.