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Finding the Fourth Proportional to 348.05, 521.79 and 193.85

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Solution

The fourth proportional to 348.05, 521.79 and 193.85 is: 290.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.05 : 521.79 = 193.85 : x
  2. Step 2: Convert to fraction form
    348.05/521.79 = 193.85/x
  3. Step 3: Cross multiply
    348.05x = 521.79 × 193.85
  4. Step 4: Simplify right side
    348.05x = 101,146.38
  5. Step 5: Solve for x
    x = 101,146.38/348.05
  6. Step 6: Final answer
    x = 290.61

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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.