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Finding the Fourth Proportional to 40.34, 60.15 and 36.69

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Solution

The fourth proportional to 40.34, 60.15 and 36.69 is: 54.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.34 : 60.15 = 36.69 : x
  2. Step 2: Convert to fraction form
    40.34/60.15 = 36.69/x
  3. Step 3: Cross multiply
    40.34x = 60.15 × 36.69
  4. Step 4: Simplify right side
    40.34x = 2,206.90
  5. Step 5: Solve for x
    x = 2,206.90/40.34
  6. Step 6: Final answer
    x = 54.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.