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Finding the Fourth Proportional to 201.15, 300.49 and 160.61

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Solution

The fourth proportional to 201.15, 300.49 and 160.61 is: 239.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.15 : 300.49 = 160.61 : x
  2. Step 2: Convert to fraction form
    201.15/300.49 = 160.61/x
  3. Step 3: Cross multiply
    201.15x = 300.49 × 160.61
  4. Step 4: Simplify right side
    201.15x = 48,259.79
  5. Step 5: Solve for x
    x = 48,259.79/201.15
  6. Step 6: Final answer
    x = 239.92

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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.