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Finding the Fourth Proportional to 109.20, 150.74 and 106.27

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Solution

The fourth proportional to 109.20, 150.74 and 106.27 is: 146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.20 : 150.74 = 106.27 : x
  2. Step 2: Convert to fraction form
    109.20/150.74 = 106.27/x
  3. Step 3: Cross multiply
    109.20x = 150.74 × 106.27
  4. Step 4: Simplify right side
    109.20x = 16,019.14
  5. Step 5: Solve for x
    x = 16,019.14/109.20
  6. Step 6: Final answer
    x = 146.70

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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.