Home / 409.23-609.21-406.80

Finding the Fourth Proportional to 409.23, 609.21 and 406.80

Calculator

Solution

The fourth proportional to 409.23, 609.21 and 406.80 is: 605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.23 : 609.21 = 406.80 : x
  2. Step 2: Convert to fraction form
    409.23/609.21 = 406.80/x
  3. Step 3: Cross multiply
    409.23x = 609.21 × 406.80
  4. Step 4: Simplify right side
    409.23x = 247,826.63
  5. Step 5: Solve for x
    x = 247,826.63/409.23
  6. Step 6: Final answer
    x = 605.59

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.