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Finding the Fourth Proportional to 366.68, 550.28 and 161.40

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Solution

The fourth proportional to 366.68, 550.28 and 161.40 is: 242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.68 : 550.28 = 161.40 : x
  2. Step 2: Convert to fraction form
    366.68/550.28 = 161.40/x
  3. Step 3: Cross multiply
    366.68x = 550.28 × 161.40
  4. Step 4: Simplify right side
    366.68x = 88,815.19
  5. Step 5: Solve for x
    x = 88,815.19/366.68
  6. Step 6: Final answer
    x = 242.21

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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.