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Finding the Fourth Proportional to 366.67, 550 and 135.61

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Solution

The fourth proportional to 366.67, 550 and 135.61 is: 203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.67 : 550 = 135.61 : x
  2. Step 2: Convert to fraction form
    366.67/550 = 135.61/x
  3. Step 3: Cross multiply
    366.67x = 550 × 135.61
  4. Step 4: Simplify right side
    366.67x = 74,582.75
  5. Step 5: Solve for x
    x = 74,582.75/366.67
  6. Step 6: Final answer
    x = 203.41

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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.