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Finding the Fourth Proportional to 166.55, 229.37 and 153.56

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Solution

The fourth proportional to 166.55, 229.37 and 153.56 is: 211.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.55 : 229.37 = 153.56 : x
  2. Step 2: Convert to fraction form
    166.55/229.37 = 153.56/x
  3. Step 3: Cross multiply
    166.55x = 229.37 × 153.56
  4. Step 4: Simplify right side
    166.55x = 35,221.86
  5. Step 5: Solve for x
    x = 35,221.86/166.55
  6. Step 6: Final answer
    x = 211.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.