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Finding the Fourth Proportional to 600.86, 828.79 and 393.50

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Solution

The fourth proportional to 600.86, 828.79 and 393.50 is: 542.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.86 : 828.79 = 393.50 : x
  2. Step 2: Convert to fraction form
    600.86/828.79 = 393.50/x
  3. Step 3: Cross multiply
    600.86x = 828.79 × 393.50
  4. Step 4: Simplify right side
    600.86x = 326,128.87
  5. Step 5: Solve for x
    x = 326,128.87/600.86
  6. Step 6: Final answer
    x = 542.77

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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.