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Finding the Fourth Proportional to 600.69, 828.91 and 391.27

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Solution

The fourth proportional to 600.69, 828.91 and 391.27 is: 539.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.69 : 828.91 = 391.27 : x
  2. Step 2: Convert to fraction form
    600.69/828.91 = 391.27/x
  3. Step 3: Cross multiply
    600.69x = 828.91 × 391.27
  4. Step 4: Simplify right side
    600.69x = 324,325.32
  5. Step 5: Solve for x
    x = 324,325.32/600.69
  6. Step 6: Final answer
    x = 539.92

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1.5x scale

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.