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Finding the Fourth Proportional to 118.20, 176.50 and 103.02

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Solution

The fourth proportional to 118.20, 176.50 and 103.02 is: 153.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.20 : 176.50 = 103.02 : x
  2. Step 2: Convert to fraction form
    118.20/176.50 = 103.02/x
  3. Step 3: Cross multiply
    118.20x = 176.50 × 103.02
  4. Step 4: Simplify right side
    118.20x = 18,183.03
  5. Step 5: Solve for x
    x = 18,183.03/118.20
  6. Step 6: Final answer
    x = 153.83

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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.