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Finding the Fourth Proportional to 369.14, 553.56 and 109.07

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Solution

The fourth proportional to 369.14, 553.56 and 109.07 is: 163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.14 : 553.56 = 109.07 : x
  2. Step 2: Convert to fraction form
    369.14/553.56 = 109.07/x
  3. Step 3: Cross multiply
    369.14x = 553.56 × 109.07
  4. Step 4: Simplify right side
    369.14x = 60,376.79
  5. Step 5: Solve for x
    x = 60,376.79/369.14
  6. Step 6: Final answer
    x = 163.56

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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.