Home / 511.13-765.66-387.95

Finding the Fourth Proportional to 511.13, 765.66 and 387.95

Calculator

Solution

The fourth proportional to 511.13, 765.66 and 387.95 is: 581.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.13 : 765.66 = 387.95 : x
  2. Step 2: Convert to fraction form
    511.13/765.66 = 387.95/x
  3. Step 3: Cross multiply
    511.13x = 765.66 × 387.95
  4. Step 4: Simplify right side
    511.13x = 297,033.97
  5. Step 5: Solve for x
    x = 297,033.97/511.13
  6. Step 6: Final answer
    x = 581.14

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.