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Finding the Fourth Proportional to 606.38, 905.18 and 561.26

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Solution

The fourth proportional to 606.38, 905.18 and 561.26 is: 837.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.38 : 905.18 = 561.26 : x
  2. Step 2: Convert to fraction form
    606.38/905.18 = 561.26/x
  3. Step 3: Cross multiply
    606.38x = 905.18 × 561.26
  4. Step 4: Simplify right side
    606.38x = 508,041.33
  5. Step 5: Solve for x
    x = 508,041.33/606.38
  6. Step 6: Final answer
    x = 837.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.