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Finding the Fourth Proportional to 606.50, 837.14 and 397.21

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Solution

The fourth proportional to 606.50, 837.14 and 397.21 is: 548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.50 : 837.14 = 397.21 : x
  2. Step 2: Convert to fraction form
    606.50/837.14 = 397.21/x
  3. Step 3: Cross multiply
    606.50x = 837.14 × 397.21
  4. Step 4: Simplify right side
    606.50x = 332,520.38
  5. Step 5: Solve for x
    x = 332,520.38/606.50
  6. Step 6: Final answer
    x = 548.26

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Double scale
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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.