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Finding the Fourth Proportional to 606.66, 836.73 and 399.94

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Solution

The fourth proportional to 606.66, 836.73 and 399.94 is: 551.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.66 : 836.73 = 399.94 : x
  2. Step 2: Convert to fraction form
    606.66/836.73 = 399.94/x
  3. Step 3: Cross multiply
    606.66x = 836.73 × 399.94
  4. Step 4: Simplify right side
    606.66x = 334,641.80
  5. Step 5: Solve for x
    x = 334,641.80/606.66
  6. Step 6: Final answer
    x = 551.61

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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.