Home / 205.98-308.79-97.85

Finding the Fourth Proportional to 205.98, 308.79 and 97.85

Calculator

Solution

The fourth proportional to 205.98, 308.79 and 97.85 is: 146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.98 : 308.79 = 97.85 : x
  2. Step 2: Convert to fraction form
    205.98/308.79 = 97.85/x
  3. Step 3: Cross multiply
    205.98x = 308.79 × 97.85
  4. Step 4: Simplify right side
    205.98x = 30,213.56
  5. Step 5: Solve for x
    x = 30,213.56/205.98
  6. Step 6: Final answer
    x = 146.68

Related Problems

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.