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Finding the Fourth Proportional to 348.29, 522.68 and 218.48

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Solution

The fourth proportional to 348.29, 522.68 and 218.48 is: 327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.29 : 522.68 = 218.48 : x
  2. Step 2: Convert to fraction form
    348.29/522.68 = 218.48/x
  3. Step 3: Cross multiply
    348.29x = 522.68 × 218.48
  4. Step 4: Simplify right side
    348.29x = 114,191.42
  5. Step 5: Solve for x
    x = 114,191.42/348.29
  6. Step 6: Final answer
    x = 327.87

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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.