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Finding the Fourth Proportional to 188.34, 281.23 and 171.30

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Solution

The fourth proportional to 188.34, 281.23 and 171.30 is: 255.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.34 : 281.23 = 171.30 : x
  2. Step 2: Convert to fraction form
    188.34/281.23 = 171.30/x
  3. Step 3: Cross multiply
    188.34x = 281.23 × 171.30
  4. Step 4: Simplify right side
    188.34x = 48,174.70
  5. Step 5: Solve for x
    x = 48,174.70/188.34
  6. Step 6: Final answer
    x = 255.79

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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.