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Finding the Fourth Proportional to 348.12, 521.84 and 194.12

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Solution

The fourth proportional to 348.12, 521.84 and 194.12 is: 290.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.12 : 521.84 = 194.12 : x
  2. Step 2: Convert to fraction form
    348.12/521.84 = 194.12/x
  3. Step 3: Cross multiply
    348.12x = 521.84 × 194.12
  4. Step 4: Simplify right side
    348.12x = 101,300.88
  5. Step 5: Solve for x
    x = 101,300.88/348.12
  6. Step 6: Final answer
    x = 290.99

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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.