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Finding the Fourth Proportional to 365.22, 547.76 and 108.72

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Solution

The fourth proportional to 365.22, 547.76 and 108.72 is: 163.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.22 : 547.76 = 108.72 : x
  2. Step 2: Convert to fraction form
    365.22/547.76 = 108.72/x
  3. Step 3: Cross multiply
    365.22x = 547.76 × 108.72
  4. Step 4: Simplify right side
    365.22x = 59,552.47
  5. Step 5: Solve for x
    x = 59,552.47/365.22
  6. Step 6: Final answer
    x = 163.06

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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.