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Finding the Fourth Proportional to 165.66, 247.22 and 154.65

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Solution

The fourth proportional to 165.66, 247.22 and 154.65 is: 230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.66 : 247.22 = 154.65 : x
  2. Step 2: Convert to fraction form
    165.66/247.22 = 154.65/x
  3. Step 3: Cross multiply
    165.66x = 247.22 × 154.65
  4. Step 4: Simplify right side
    165.66x = 38,234.18
  5. Step 5: Solve for x
    x = 38,234.18/165.66
  6. Step 6: Final answer
    x = 230.80

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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.