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Finding the Fourth Proportional to 344.18, 515.19 and 226.91

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Solution

The fourth proportional to 344.18, 515.19 and 226.91 is: 339.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.18 : 515.19 = 226.91 : x
  2. Step 2: Convert to fraction form
    344.18/515.19 = 226.91/x
  3. Step 3: Cross multiply
    344.18x = 515.19 × 226.91
  4. Step 4: Simplify right side
    344.18x = 116,901.76
  5. Step 5: Solve for x
    x = 116,901.76/344.18
  6. Step 6: Final answer
    x = 339.65

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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.