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Finding the Fourth Proportional to 226.99, 340.34 and 145.90

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Solution

The fourth proportional to 226.99, 340.34 and 145.90 is: 218.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.99 : 340.34 = 145.90 : x
  2. Step 2: Convert to fraction form
    226.99/340.34 = 145.90/x
  3. Step 3: Cross multiply
    226.99x = 340.34 × 145.90
  4. Step 4: Simplify right side
    226.99x = 49,654.03
  5. Step 5: Solve for x
    x = 49,654.03/226.99
  6. Step 6: Final answer
    x = 218.75

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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.