Home / 322.40-483.42-139.76

Finding the Fourth Proportional to 322.40, 483.42 and 139.76

Calculator

Solution

The fourth proportional to 322.40, 483.42 and 139.76 is: 209.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.40 : 483.42 = 139.76 : x
  2. Step 2: Convert to fraction form
    322.40/483.42 = 139.76/x
  3. Step 3: Cross multiply
    322.40x = 483.42 × 139.76
  4. Step 4: Simplify right side
    322.40x = 67,562.78
  5. Step 5: Solve for x
    x = 67,562.78/322.40
  6. Step 6: Final answer
    x = 209.56

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.