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Finding the Fourth Proportional to 379.01, 522.99 and 254.65

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Solution

The fourth proportional to 379.01, 522.99 and 254.65 is: 351.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.01 : 522.99 = 254.65 : x
  2. Step 2: Convert to fraction form
    379.01/522.99 = 254.65/x
  3. Step 3: Cross multiply
    379.01x = 522.99 × 254.65
  4. Step 4: Simplify right side
    379.01x = 133,179.40
  5. Step 5: Solve for x
    x = 133,179.40/379.01
  6. Step 6: Final answer
    x = 351.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.