Home / 520.17-717.91-299.12

Finding the Fourth Proportional to 520.17, 717.91 and 299.12

Calculator

Solution

The fourth proportional to 520.17, 717.91 and 299.12 is: 412.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.17 : 717.91 = 299.12 : x
  2. Step 2: Convert to fraction form
    520.17/717.91 = 299.12/x
  3. Step 3: Cross multiply
    520.17x = 717.91 × 299.12
  4. Step 4: Simplify right side
    520.17x = 214,736.34
  5. Step 5: Solve for x
    x = 214,736.34/520.17
  6. Step 6: Final answer
    x = 412.82

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.