Home / 443.21-663.82-321.19

Finding the Fourth Proportional to 443.21, 663.82 and 321.19

Calculator

Solution

The fourth proportional to 443.21, 663.82 and 321.19 is: 481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.21 : 663.82 = 321.19 : x
  2. Step 2: Convert to fraction form
    443.21/663.82 = 321.19/x
  3. Step 3: Cross multiply
    443.21x = 663.82 × 321.19
  4. Step 4: Simplify right side
    443.21x = 213,209.88
  5. Step 5: Solve for x
    x = 213,209.88/443.21
  6. Step 6: Final answer
    x = 481.06

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.