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Finding the Fourth Proportional to 600.50, 828.69 and 393.86

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Solution

The fourth proportional to 600.50, 828.69 and 393.86 is: 543.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.50 : 828.69 = 393.86 : x
  2. Step 2: Convert to fraction form
    600.50/828.69 = 393.86/x
  3. Step 3: Cross multiply
    600.50x = 828.69 × 393.86
  4. Step 4: Simplify right side
    600.50x = 326,387.84
  5. Step 5: Solve for x
    x = 326,387.84/600.50
  6. Step 6: Final answer
    x = 543.53

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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.