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Finding the Fourth Proportional to 134.22, 185.49 and 109.62

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Solution

The fourth proportional to 134.22, 185.49 and 109.62 is: 151.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.22 : 185.49 = 109.62 : x
  2. Step 2: Convert to fraction form
    134.22/185.49 = 109.62/x
  3. Step 3: Cross multiply
    134.22x = 185.49 × 109.62
  4. Step 4: Simplify right side
    134.22x = 20,333.41
  5. Step 5: Solve for x
    x = 20,333.41/134.22
  6. Step 6: Final answer
    x = 151.49

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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.