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Finding the Fourth Proportional to 264.20, 364.26 and 219.74

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Solution

The fourth proportional to 264.20, 364.26 and 219.74 is: 302.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.20 : 364.26 = 219.74 : x
  2. Step 2: Convert to fraction form
    264.20/364.26 = 219.74/x
  3. Step 3: Cross multiply
    264.20x = 364.26 × 219.74
  4. Step 4: Simplify right side
    264.20x = 80,042.49
  5. Step 5: Solve for x
    x = 80,042.49/264.20
  6. Step 6: Final answer
    x = 302.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.