Home / 398.82-550.21-232.98

Finding the Fourth Proportional to 398.82, 550.21 and 232.98

Calculator

Solution

The fourth proportional to 398.82, 550.21 and 232.98 is: 321.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.82 : 550.21 = 232.98 : x
  2. Step 2: Convert to fraction form
    398.82/550.21 = 232.98/x
  3. Step 3: Cross multiply
    398.82x = 550.21 × 232.98
  4. Step 4: Simplify right side
    398.82x = 128,187.93
  5. Step 5: Solve for x
    x = 128,187.93/398.82
  6. Step 6: Final answer
    x = 321.42

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.