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Finding the Fourth Proportional to 264.20, 364.92 and 222.90

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Solution

The fourth proportional to 264.20, 364.92 and 222.90 is: 307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.20 : 364.92 = 222.90 : x
  2. Step 2: Convert to fraction form
    264.20/364.92 = 222.90/x
  3. Step 3: Cross multiply
    264.20x = 364.92 × 222.90
  4. Step 4: Simplify right side
    264.20x = 81,340.67
  5. Step 5: Solve for x
    x = 81,340.67/264.20
  6. Step 6: Final answer
    x = 307.88

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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.