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Finding the Fourth Proportional to 40.41, 60.59 and 18.77

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Solution

The fourth proportional to 40.41, 60.59 and 18.77 is: 28.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.41 : 60.59 = 18.77 : x
  2. Step 2: Convert to fraction form
    40.41/60.59 = 18.77/x
  3. Step 3: Cross multiply
    40.41x = 60.59 × 18.77
  4. Step 4: Simplify right side
    40.41x = 1,137.02
  5. Step 5: Solve for x
    x = 1,137.02/40.41
  6. Step 6: Final answer
    x = 28.14

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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.