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Finding the Fourth Proportional to 379.26, 568.65 and 206.10

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Solution

The fourth proportional to 379.26, 568.65 and 206.10 is: 309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.26 : 568.65 = 206.10 : x
  2. Step 2: Convert to fraction form
    379.26/568.65 = 206.10/x
  3. Step 3: Cross multiply
    379.26x = 568.65 × 206.10
  4. Step 4: Simplify right side
    379.26x = 117,198.77
  5. Step 5: Solve for x
    x = 117,198.77/379.26
  6. Step 6: Final answer
    x = 309.02

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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.