Home / 306.11-422.48-189.71

Finding the Fourth Proportional to 306.11, 422.48 and 189.71

Calculator

Solution

The fourth proportional to 306.11, 422.48 and 189.71 is: 261.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.11 : 422.48 = 189.71 : x
  2. Step 2: Convert to fraction form
    306.11/422.48 = 189.71/x
  3. Step 3: Cross multiply
    306.11x = 422.48 × 189.71
  4. Step 4: Simplify right side
    306.11x = 80,147.73
  5. Step 5: Solve for x
    x = 80,147.73/306.11
  6. Step 6: Final answer
    x = 261.83

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.