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Finding the Fourth Proportional to 600.40, 828.65 and 379.47

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Solution

The fourth proportional to 600.40, 828.65 and 379.47 is: 523.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.40 : 828.65 = 379.47 : x
  2. Step 2: Convert to fraction form
    600.40/828.65 = 379.47/x
  3. Step 3: Cross multiply
    600.40x = 828.65 × 379.47
  4. Step 4: Simplify right side
    600.40x = 314,447.82
  5. Step 5: Solve for x
    x = 314,447.82/600.40
  6. Step 6: Final answer
    x = 523.73

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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.