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Finding the Fourth Proportional to 606.76, 905.73 and 561.68

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Solution

The fourth proportional to 606.76, 905.73 and 561.68 is: 838.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.76 : 905.73 = 561.68 : x
  2. Step 2: Convert to fraction form
    606.76/905.73 = 561.68/x
  3. Step 3: Cross multiply
    606.76x = 905.73 × 561.68
  4. Step 4: Simplify right side
    606.76x = 508,727.62
  5. Step 5: Solve for x
    x = 508,727.62/606.76
  6. Step 6: Final answer
    x = 838.43

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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.