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Finding the Fourth Proportional to 379.15, 568.32 and 147.97

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Solution

The fourth proportional to 379.15, 568.32 and 147.97 is: 221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.15 : 568.32 = 147.97 : x
  2. Step 2: Convert to fraction form
    379.15/568.32 = 147.97/x
  3. Step 3: Cross multiply
    379.15x = 568.32 × 147.97
  4. Step 4: Simplify right side
    379.15x = 84,094.31
  5. Step 5: Solve for x
    x = 84,094.31/379.15
  6. Step 6: Final answer
    x = 221.80

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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.