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Finding the Fourth Proportional to 606.04, 909.09 and 221.20

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Solution

The fourth proportional to 606.04, 909.09 and 221.20 is: 331.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.04 : 909.09 = 221.20 : x
  2. Step 2: Convert to fraction form
    606.04/909.09 = 221.20/x
  3. Step 3: Cross multiply
    606.04x = 909.09 × 221.20
  4. Step 4: Simplify right side
    606.04x = 201,090.71
  5. Step 5: Solve for x
    x = 201,090.71/606.04
  6. Step 6: Final answer
    x = 331.81

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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.