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Finding the Fourth Proportional to 199.53, 275.27 and 149.85

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Solution

The fourth proportional to 199.53, 275.27 and 149.85 is: 206.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.53 : 275.27 = 149.85 : x
  2. Step 2: Convert to fraction form
    199.53/275.27 = 149.85/x
  3. Step 3: Cross multiply
    199.53x = 275.27 × 149.85
  4. Step 4: Simplify right side
    199.53x = 41,248.46
  5. Step 5: Solve for x
    x = 41,248.46/199.53
  6. Step 6: Final answer
    x = 206.73

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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.