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Finding the Fourth Proportional to 166.37, 229.65 and 107.42

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Solution

The fourth proportional to 166.37, 229.65 and 107.42 is: 148.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.37 : 229.65 = 107.42 : x
  2. Step 2: Convert to fraction form
    166.37/229.65 = 107.42/x
  3. Step 3: Cross multiply
    166.37x = 229.65 × 107.42
  4. Step 4: Simplify right side
    166.37x = 24,669.00
  5. Step 5: Solve for x
    x = 24,669.00/166.37
  6. Step 6: Final answer
    x = 148.28

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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.