Home / 521.71-783.38-414.39

Finding the Fourth Proportional to 521.71, 783.38 and 414.39

Calculator

Solution

The fourth proportional to 521.71, 783.38 and 414.39 is: 622.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.71 : 783.38 = 414.39 : x
  2. Step 2: Convert to fraction form
    521.71/783.38 = 414.39/x
  3. Step 3: Cross multiply
    521.71x = 783.38 × 414.39
  4. Step 4: Simplify right side
    521.71x = 324,624.84
  5. Step 5: Solve for x
    x = 324,624.84/521.71
  6. Step 6: Final answer
    x = 622.23

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.