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Finding the Fourth Proportional to 203.74, 304.13 and 188.72

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Solution

The fourth proportional to 203.74, 304.13 and 188.72 is: 281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.74 : 304.13 = 188.72 : x
  2. Step 2: Convert to fraction form
    203.74/304.13 = 188.72/x
  3. Step 3: Cross multiply
    203.74x = 304.13 × 188.72
  4. Step 4: Simplify right side
    203.74x = 57,394.44
  5. Step 5: Solve for x
    x = 57,394.44/203.74
  6. Step 6: Final answer
    x = 281.71

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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.