Home / 398.44-550.14-343.77

Finding the Fourth Proportional to 398.44, 550.14 and 343.77

Calculator

Solution

The fourth proportional to 398.44, 550.14 and 343.77 is: 474.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.44 : 550.14 = 343.77 : x
  2. Step 2: Convert to fraction form
    398.44/550.14 = 343.77/x
  3. Step 3: Cross multiply
    398.44x = 550.14 × 343.77
  4. Step 4: Simplify right side
    398.44x = 189,121.63
  5. Step 5: Solve for x
    x = 189,121.63/398.44
  6. Step 6: Final answer
    x = 474.66

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.