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Finding the Fourth Proportional to 368.90, 553.24 and 108.88

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Solution

The fourth proportional to 368.90, 553.24 and 108.88 is: 163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.90 : 553.24 = 108.88 : x
  2. Step 2: Convert to fraction form
    368.90/553.24 = 108.88/x
  3. Step 3: Cross multiply
    368.90x = 553.24 × 108.88
  4. Step 4: Simplify right side
    368.90x = 60,236.77
  5. Step 5: Solve for x
    x = 60,236.77/368.90
  6. Step 6: Final answer
    x = 163.29

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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.