Home / 578.49-797.76-392.19

Finding the Fourth Proportional to 578.49, 797.76 and 392.19

Calculator

Solution

The fourth proportional to 578.49, 797.76 and 392.19 is: 540.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.49 : 797.76 = 392.19 : x
  2. Step 2: Convert to fraction form
    578.49/797.76 = 392.19/x
  3. Step 3: Cross multiply
    578.49x = 797.76 × 392.19
  4. Step 4: Simplify right side
    578.49x = 312,873.49
  5. Step 5: Solve for x
    x = 312,873.49/578.49
  6. Step 6: Final answer
    x = 540.85

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.