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Finding the Fourth Proportional to 226.64, 340.44 and 145.68

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Solution

The fourth proportional to 226.64, 340.44 and 145.68 is: 218.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.64 : 340.44 = 145.68 : x
  2. Step 2: Convert to fraction form
    226.64/340.44 = 145.68/x
  3. Step 3: Cross multiply
    226.64x = 340.44 × 145.68
  4. Step 4: Simplify right side
    226.64x = 49,595.30
  5. Step 5: Solve for x
    x = 49,595.30/226.64
  6. Step 6: Final answer
    x = 218.83

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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.