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Finding the Fourth Proportional to 203.91, 304.16 and 180.82

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Solution

The fourth proportional to 203.91, 304.16 and 180.82 is: 269.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.91 : 304.16 = 180.82 : x
  2. Step 2: Convert to fraction form
    203.91/304.16 = 180.82/x
  3. Step 3: Cross multiply
    203.91x = 304.16 × 180.82
  4. Step 4: Simplify right side
    203.91x = 54,998.21
  5. Step 5: Solve for x
    x = 54,998.21/203.91
  6. Step 6: Final answer
    x = 269.72

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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.