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Finding the Fourth Proportional to 365.22, 547.54 and 121.68

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Solution

The fourth proportional to 365.22, 547.54 and 121.68 is: 182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.22 : 547.54 = 121.68 : x
  2. Step 2: Convert to fraction form
    365.22/547.54 = 121.68/x
  3. Step 3: Cross multiply
    365.22x = 547.54 × 121.68
  4. Step 4: Simplify right side
    365.22x = 66,624.67
  5. Step 5: Solve for x
    x = 66,624.67/365.22
  6. Step 6: Final answer
    x = 182.42

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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.