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Finding the Fourth Proportional to 377.07, 519.26 and 321.79

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Solution

The fourth proportional to 377.07, 519.26 and 321.79 is: 443.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.07 : 519.26 = 321.79 : x
  2. Step 2: Convert to fraction form
    377.07/519.26 = 321.79/x
  3. Step 3: Cross multiply
    377.07x = 519.26 × 321.79
  4. Step 4: Simplify right side
    377.07x = 167,092.68
  5. Step 5: Solve for x
    x = 167,092.68/377.07
  6. Step 6: Final answer
    x = 443.13

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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.