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Finding the Fourth Proportional to 379.39, 571.18 and 297.56

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Solution

The fourth proportional to 379.39, 571.18 and 297.56 is: 447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.39 : 571.18 = 297.56 : x
  2. Step 2: Convert to fraction form
    379.39/571.18 = 297.56/x
  3. Step 3: Cross multiply
    379.39x = 571.18 × 297.56
  4. Step 4: Simplify right side
    379.39x = 169,960.32
  5. Step 5: Solve for x
    x = 169,960.32/379.39
  6. Step 6: Final answer
    x = 447.98

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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.