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Finding the Fourth Proportional to 202.92, 304.65 and 121.92

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Solution

The fourth proportional to 202.92, 304.65 and 121.92 is: 183.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.92 : 304.65 = 121.92 : x
  2. Step 2: Convert to fraction form
    202.92/304.65 = 121.92/x
  3. Step 3: Cross multiply
    202.92x = 304.65 × 121.92
  4. Step 4: Simplify right side
    202.92x = 37,142.93
  5. Step 5: Solve for x
    x = 37,142.93/202.92
  6. Step 6: Final answer
    x = 183.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.