Home / 519.21-716.45-322.79

Finding the Fourth Proportional to 519.21, 716.45 and 322.79

Calculator

Solution

The fourth proportional to 519.21, 716.45 and 322.79 is: 445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.21 : 716.45 = 322.79 : x
  2. Step 2: Convert to fraction form
    519.21/716.45 = 322.79/x
  3. Step 3: Cross multiply
    519.21x = 716.45 × 322.79
  4. Step 4: Simplify right side
    519.21x = 231,257.70
  5. Step 5: Solve for x
    x = 231,257.70/519.21
  6. Step 6: Final answer
    x = 445.40

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.