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Finding the Fourth Proportional to 348.62, 522.92 and 129.29

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Solution

The fourth proportional to 348.62, 522.92 and 129.29 is: 193.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.62 : 522.92 = 129.29 : x
  2. Step 2: Convert to fraction form
    348.62/522.92 = 129.29/x
  3. Step 3: Cross multiply
    348.62x = 522.92 × 129.29
  4. Step 4: Simplify right side
    348.62x = 67,608.33
  5. Step 5: Solve for x
    x = 67,608.33/348.62
  6. Step 6: Final answer
    x = 193.93

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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.