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Finding the Fourth Proportional to 166.34, 248.78 and 101.16

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Solution

The fourth proportional to 166.34, 248.78 and 101.16 is: 151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.34 : 248.78 = 101.16 : x
  2. Step 2: Convert to fraction form
    166.34/248.78 = 101.16/x
  3. Step 3: Cross multiply
    166.34x = 248.78 × 101.16
  4. Step 4: Simplify right side
    166.34x = 25,166.58
  5. Step 5: Solve for x
    x = 25,166.58/166.34
  6. Step 6: Final answer
    x = 151.30

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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.