Home / 717-989.52-422.28

Finding the Fourth Proportional to 717, 989.52 and 422.28

Calculator

Solution

The fourth proportional to 717, 989.52 and 422.28 is: 582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    717 : 989.52 = 422.28 : x
  2. Step 2: Convert to fraction form
    717/989.52 = 422.28/x
  3. Step 3: Cross multiply
    717x = 989.52 × 422.28
  4. Step 4: Simplify right side
    717x = 417,854.51
  5. Step 5: Solve for x
    x = 417,854.51/717
  6. Step 6: Final answer
    x = 582.78

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.