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Finding the Fourth Proportional to 203.78, 304.86 and 174.96

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Solution

The fourth proportional to 203.78, 304.86 and 174.96 is: 261.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.78 : 304.86 = 174.96 : x
  2. Step 2: Convert to fraction form
    203.78/304.86 = 174.96/x
  3. Step 3: Cross multiply
    203.78x = 304.86 × 174.96
  4. Step 4: Simplify right side
    203.78x = 53,338.96
  5. Step 5: Solve for x
    x = 53,338.96/203.78
  6. Step 6: Final answer
    x = 261.74

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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.