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Finding the Fourth Proportional to 166.60, 248.45 and 164.80

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Solution

The fourth proportional to 166.60, 248.45 and 164.80 is: 245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.60 : 248.45 = 164.80 : x
  2. Step 2: Convert to fraction form
    166.60/248.45 = 164.80/x
  3. Step 3: Cross multiply
    166.60x = 248.45 × 164.80
  4. Step 4: Simplify right side
    166.60x = 40,944.56
  5. Step 5: Solve for x
    x = 40,944.56/166.60
  6. Step 6: Final answer
    x = 245.77

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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.