Home / 490.67-677.18-294.20

Finding the Fourth Proportional to 490.67, 677.18 and 294.20

Calculator

Solution

The fourth proportional to 490.67, 677.18 and 294.20 is: 406.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.67 : 677.18 = 294.20 : x
  2. Step 2: Convert to fraction form
    490.67/677.18 = 294.20/x
  3. Step 3: Cross multiply
    490.67x = 677.18 × 294.20
  4. Step 4: Simplify right side
    490.67x = 199,224.89
  5. Step 5: Solve for x
    x = 199,224.89/490.67
  6. Step 6: Final answer
    x = 406.03

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.