Home / 400.71-552.38-313.23

Finding the Fourth Proportional to 400.71, 552.38 and 313.23

Calculator

Solution

The fourth proportional to 400.71, 552.38 and 313.23 is: 431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.71 : 552.38 = 313.23 : x
  2. Step 2: Convert to fraction form
    400.71/552.38 = 313.23/x
  3. Step 3: Cross multiply
    400.71x = 552.38 × 313.23
  4. Step 4: Simplify right side
    400.71x = 173,020.42
  5. Step 5: Solve for x
    x = 173,020.42/400.71
  6. Step 6: Final answer
    x = 431.78

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.