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Finding the Fourth Proportional to 606.86, 911.22 and 581.90

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Solution

The fourth proportional to 606.86, 911.22 and 581.90 is: 873.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.86 : 911.22 = 581.90 : x
  2. Step 2: Convert to fraction form
    606.86/911.22 = 581.90/x
  3. Step 3: Cross multiply
    606.86x = 911.22 × 581.90
  4. Step 4: Simplify right side
    606.86x = 530,238.92
  5. Step 5: Solve for x
    x = 530,238.92/606.86
  6. Step 6: Final answer
    x = 873.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.