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Finding the Fourth Proportional to 606.97, 837.89 and 386.22

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Solution

The fourth proportional to 606.97, 837.89 and 386.22 is: 533.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.97 : 837.89 = 386.22 : x
  2. Step 2: Convert to fraction form
    606.97/837.89 = 386.22/x
  3. Step 3: Cross multiply
    606.97x = 837.89 × 386.22
  4. Step 4: Simplify right side
    606.97x = 323,609.99
  5. Step 5: Solve for x
    x = 323,609.99/606.97
  6. Step 6: Final answer
    x = 533.16

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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.