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Finding the Fourth Proportional to 203.08, 304.48 and 121.88

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Solution

The fourth proportional to 203.08, 304.48 and 121.88 is: 182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.08 : 304.48 = 121.88 : x
  2. Step 2: Convert to fraction form
    203.08/304.48 = 121.88/x
  3. Step 3: Cross multiply
    203.08x = 304.48 × 121.88
  4. Step 4: Simplify right side
    203.08x = 37,110.02
  5. Step 5: Solve for x
    x = 37,110.02/203.08
  6. Step 6: Final answer
    x = 182.74

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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.