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Finding the Fourth Proportional to 73.43, 110.15 and 27.78

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Solution

The fourth proportional to 73.43, 110.15 and 27.78 is: 41.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.43 : 110.15 = 27.78 : x
  2. Step 2: Convert to fraction form
    73.43/110.15 = 27.78/x
  3. Step 3: Cross multiply
    73.43x = 110.15 × 27.78
  4. Step 4: Simplify right side
    73.43x = 3,059.83
  5. Step 5: Solve for x
    x = 3,059.83/73.43
  6. Step 6: Final answer
    x = 41.67

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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.