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Finding the Fourth Proportional to 606.58, 909.15 and 221.62

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Solution

The fourth proportional to 606.58, 909.15 and 221.62 is: 332.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.58 : 909.15 = 221.62 : x
  2. Step 2: Convert to fraction form
    606.58/909.15 = 221.62/x
  3. Step 3: Cross multiply
    606.58x = 909.15 × 221.62
  4. Step 4: Simplify right side
    606.58x = 201,485.82
  5. Step 5: Solve for x
    x = 201,485.82/606.58
  6. Step 6: Final answer
    x = 332.17

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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.