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Finding the Fourth Proportional to 203.73, 305.50 and 73.72

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Solution

The fourth proportional to 203.73, 305.50 and 73.72 is: 110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.73 : 305.50 = 73.72 : x
  2. Step 2: Convert to fraction form
    203.73/305.50 = 73.72/x
  3. Step 3: Cross multiply
    203.73x = 305.50 × 73.72
  4. Step 4: Simplify right side
    203.73x = 22,521.46
  5. Step 5: Solve for x
    x = 22,521.46/203.73
  6. Step 6: Final answer
    x = 110.55

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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.