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Finding the Fourth Proportional to 347.24, 478.92 and 222.91

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Solution

The fourth proportional to 347.24, 478.92 and 222.91 is: 307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.24 : 478.92 = 222.91 : x
  2. Step 2: Convert to fraction form
    347.24/478.92 = 222.91/x
  3. Step 3: Cross multiply
    347.24x = 478.92 × 222.91
  4. Step 4: Simplify right side
    347.24x = 106,757.97
  5. Step 5: Solve for x
    x = 106,757.97/347.24
  6. Step 6: Final answer
    x = 307.44

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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.