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Finding the Fourth Proportional to 94.21, 141.27 and 40.11

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Solution

The fourth proportional to 94.21, 141.27 and 40.11 is: 60.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.21 : 141.27 = 40.11 : x
  2. Step 2: Convert to fraction form
    94.21/141.27 = 40.11/x
  3. Step 3: Cross multiply
    94.21x = 141.27 × 40.11
  4. Step 4: Simplify right side
    94.21x = 5,665.63
  5. Step 5: Solve for x
    x = 5,665.63/94.21
  6. Step 6: Final answer
    x = 60.14

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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.