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Finding the Fourth Proportional to 606.25, 907.94 and 386.09

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Solution

The fourth proportional to 606.25, 907.94 and 386.09 is: 578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.25 : 907.94 = 386.09 : x
  2. Step 2: Convert to fraction form
    606.25/907.94 = 386.09/x
  3. Step 3: Cross multiply
    606.25x = 907.94 × 386.09
  4. Step 4: Simplify right side
    606.25x = 350,546.55
  5. Step 5: Solve for x
    x = 350,546.55/606.25
  6. Step 6: Final answer
    x = 578.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.