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Finding the Fourth Proportional to 379.89, 572.24 and 356.84

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Solution

The fourth proportional to 379.89, 572.24 and 356.84 is: 537.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.89 : 572.24 = 356.84 : x
  2. Step 2: Convert to fraction form
    379.89/572.24 = 356.84/x
  3. Step 3: Cross multiply
    379.89x = 572.24 × 356.84
  4. Step 4: Simplify right side
    379.89x = 204,195.26
  5. Step 5: Solve for x
    x = 204,195.26/379.89
  6. Step 6: Final answer
    x = 537.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.