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Finding the Fourth Proportional to 349.98, 524.97 and 206.61

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Solution

The fourth proportional to 349.98, 524.97 and 206.61 is: 309.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.98 : 524.97 = 206.61 : x
  2. Step 2: Convert to fraction form
    349.98/524.97 = 206.61/x
  3. Step 3: Cross multiply
    349.98x = 524.97 × 206.61
  4. Step 4: Simplify right side
    349.98x = 108,464.05
  5. Step 5: Solve for x
    x = 108,464.05/349.98
  6. Step 6: Final answer
    x = 309.92

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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.