Home / 510-764.88-278.88

Finding the Fourth Proportional to 510, 764.88 and 278.88

Calculator

Solution

The fourth proportional to 510, 764.88 and 278.88 is: 418.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    510 : 764.88 = 278.88 : x
  2. Step 2: Convert to fraction form
    510/764.88 = 278.88/x
  3. Step 3: Cross multiply
    510x = 764.88 × 278.88
  4. Step 4: Simplify right side
    510x = 213,309.73
  5. Step 5: Solve for x
    x = 213,309.73/510
  6. Step 6: Final answer
    x = 418.25

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.