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Finding the Fourth Proportional to 379.10, 522.69 and 247.88

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Solution

The fourth proportional to 379.10, 522.69 and 247.88 is: 341.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.10 : 522.69 = 247.88 : x
  2. Step 2: Convert to fraction form
    379.10/522.69 = 247.88/x
  3. Step 3: Cross multiply
    379.10x = 522.69 × 247.88
  4. Step 4: Simplify right side
    379.10x = 129,561.78
  5. Step 5: Solve for x
    x = 129,561.78/379.10
  6. Step 6: Final answer
    x = 341.77

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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.