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Finding the Fourth Proportional to 226.48, 340.18 and 215.25

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Solution

The fourth proportional to 226.48, 340.18 and 215.25 is: 323.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.48 : 340.18 = 215.25 : x
  2. Step 2: Convert to fraction form
    226.48/340.18 = 215.25/x
  3. Step 3: Cross multiply
    226.48x = 340.18 × 215.25
  4. Step 4: Simplify right side
    226.48x = 73,223.75
  5. Step 5: Solve for x
    x = 73,223.75/226.48
  6. Step 6: Final answer
    x = 323.31

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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.