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Finding the Fourth Proportional to 606.40, 836.60 and 344.38

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Solution

The fourth proportional to 606.40, 836.60 and 344.38 is: 475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.40 : 836.60 = 344.38 : x
  2. Step 2: Convert to fraction form
    606.40/836.60 = 344.38/x
  3. Step 3: Cross multiply
    606.40x = 836.60 × 344.38
  4. Step 4: Simplify right side
    606.40x = 288,108.31
  5. Step 5: Solve for x
    x = 288,108.31/606.40
  6. Step 6: Final answer
    x = 475.11

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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.