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Finding the Fourth Proportional to 366.16, 547.98 and 221.98

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Solution

The fourth proportional to 366.16, 547.98 and 221.98 is: 332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.16 : 547.98 = 221.98 : x
  2. Step 2: Convert to fraction form
    366.16/547.98 = 221.98/x
  3. Step 3: Cross multiply
    366.16x = 547.98 × 221.98
  4. Step 4: Simplify right side
    366.16x = 121,640.60
  5. Step 5: Solve for x
    x = 121,640.60/366.16
  6. Step 6: Final answer
    x = 332.21

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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.