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Finding the Fourth Proportional to 220.99, 329.87 and 204.93

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Solution

The fourth proportional to 220.99, 329.87 and 204.93 is: 305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.99 : 329.87 = 204.93 : x
  2. Step 2: Convert to fraction form
    220.99/329.87 = 204.93/x
  3. Step 3: Cross multiply
    220.99x = 329.87 × 204.93
  4. Step 4: Simplify right side
    220.99x = 67,598.69
  5. Step 5: Solve for x
    x = 67,598.69/220.99
  6. Step 6: Final answer
    x = 305.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.