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Finding the Fourth Proportional to 606.57, 911.06 and 519.87

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Solution

The fourth proportional to 606.57, 911.06 and 519.87 is: 780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.57 : 911.06 = 519.87 : x
  2. Step 2: Convert to fraction form
    606.57/911.06 = 519.87/x
  3. Step 3: Cross multiply
    606.57x = 911.06 × 519.87
  4. Step 4: Simplify right side
    606.57x = 473,630.16
  5. Step 5: Solve for x
    x = 473,630.16/606.57
  6. Step 6: Final answer
    x = 780.83

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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.