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Finding the Fourth Proportional to 568.38, 851.74 and 308.16

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Solution

The fourth proportional to 568.38, 851.74 and 308.16 is: 461.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.38 : 851.74 = 308.16 : x
  2. Step 2: Convert to fraction form
    568.38/851.74 = 308.16/x
  3. Step 3: Cross multiply
    568.38x = 851.74 × 308.16
  4. Step 4: Simplify right side
    568.38x = 262,472.20
  5. Step 5: Solve for x
    x = 262,472.20/568.38
  6. Step 6: Final answer
    x = 461.79

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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.