Home / 426.68-639.09-263.87

Finding the Fourth Proportional to 426.68, 639.09 and 263.87

Calculator

Solution

The fourth proportional to 426.68, 639.09 and 263.87 is: 395.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.68 : 639.09 = 263.87 : x
  2. Step 2: Convert to fraction form
    426.68/639.09 = 263.87/x
  3. Step 3: Cross multiply
    426.68x = 639.09 × 263.87
  4. Step 4: Simplify right side
    426.68x = 168,636.68
  5. Step 5: Solve for x
    x = 168,636.68/426.68
  6. Step 6: Final answer
    x = 395.23

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.