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Finding the Fourth Proportional to 348.24, 522.20 and 203.92

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Solution

The fourth proportional to 348.24, 522.20 and 203.92 is: 305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.24 : 522.20 = 203.92 : x
  2. Step 2: Convert to fraction form
    348.24/522.20 = 203.92/x
  3. Step 3: Cross multiply
    348.24x = 522.20 × 203.92
  4. Step 4: Simplify right side
    348.24x = 106,487.02
  5. Step 5: Solve for x
    x = 106,487.02/348.24
  6. Step 6: Final answer
    x = 305.79

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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.