Home / 561.08-774.27-328.20

Finding the Fourth Proportional to 561.08, 774.27 and 328.20

Calculator

Solution

The fourth proportional to 561.08, 774.27 and 328.20 is: 452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.08 : 774.27 = 328.20 : x
  2. Step 2: Convert to fraction form
    561.08/774.27 = 328.20/x
  3. Step 3: Cross multiply
    561.08x = 774.27 × 328.20
  4. Step 4: Simplify right side
    561.08x = 254,115.41
  5. Step 5: Solve for x
    x = 254,115.41/561.08
  6. Step 6: Final answer
    x = 452.90

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.