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Finding the Fourth Proportional to 220.08, 330.74 and 204.60

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Solution

The fourth proportional to 220.08, 330.74 and 204.60 is: 307.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.08 : 330.74 = 204.60 : x
  2. Step 2: Convert to fraction form
    220.08/330.74 = 204.60/x
  3. Step 3: Cross multiply
    220.08x = 330.74 × 204.60
  4. Step 4: Simplify right side
    220.08x = 67,668.38
  5. Step 5: Solve for x
    x = 67,668.38/220.08
  6. Step 6: Final answer
    x = 307.47

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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.