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Finding the Fourth Proportional to 379.16, 568.88 and 225.22

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Solution

The fourth proportional to 379.16, 568.88 and 225.22 is: 337.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.16 : 568.88 = 225.22 : x
  2. Step 2: Convert to fraction form
    379.16/568.88 = 225.22/x
  3. Step 3: Cross multiply
    379.16x = 568.88 × 225.22
  4. Step 4: Simplify right side
    379.16x = 128,123.15
  5. Step 5: Solve for x
    x = 128,123.15/379.16
  6. Step 6: Final answer
    x = 337.91

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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.