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Finding the Fourth Proportional to 600.64, 828.98 and 391.43

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Solution

The fourth proportional to 600.64, 828.98 and 391.43 is: 540.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.64 : 828.98 = 391.43 : x
  2. Step 2: Convert to fraction form
    600.64/828.98 = 391.43/x
  3. Step 3: Cross multiply
    600.64x = 828.98 × 391.43
  4. Step 4: Simplify right side
    600.64x = 324,487.64
  5. Step 5: Solve for x
    x = 324,487.64/600.64
  6. Step 6: Final answer
    x = 540.24

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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.