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Finding the Fourth Proportional to 366.66, 548.64 and 220.50

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Solution

The fourth proportional to 366.66, 548.64 and 220.50 is: 329.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.66 : 548.64 = 220.50 : x
  2. Step 2: Convert to fraction form
    366.66/548.64 = 220.50/x
  3. Step 3: Cross multiply
    366.66x = 548.64 × 220.50
  4. Step 4: Simplify right side
    366.66x = 120,975.12
  5. Step 5: Solve for x
    x = 120,975.12/366.66
  6. Step 6: Final answer
    x = 329.94

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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.