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Finding the Fourth Proportional to 166.72, 248.48 and 134.08

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Solution

The fourth proportional to 166.72, 248.48 and 134.08 is: 199.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.72 : 248.48 = 134.08 : x
  2. Step 2: Convert to fraction form
    166.72/248.48 = 134.08/x
  3. Step 3: Cross multiply
    166.72x = 248.48 × 134.08
  4. Step 4: Simplify right side
    166.72x = 33,316.20
  5. Step 5: Solve for x
    x = 33,316.20/166.72
  6. Step 6: Final answer
    x = 199.83

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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.