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Finding the Fourth Proportional to 247.19, 370.85 and 73.85

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Solution

The fourth proportional to 247.19, 370.85 and 73.85 is: 110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.19 : 370.85 = 73.85 : x
  2. Step 2: Convert to fraction form
    247.19/370.85 = 73.85/x
  3. Step 3: Cross multiply
    247.19x = 370.85 × 73.85
  4. Step 4: Simplify right side
    247.19x = 27,385.05
  5. Step 5: Solve for x
    x = 27,385.05/247.19
  6. Step 6: Final answer
    x = 110.79

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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.