Home / 520.83-718.75-299.86

Finding the Fourth Proportional to 520.83, 718.75 and 299.86

Calculator

Solution

The fourth proportional to 520.83, 718.75 and 299.86 is: 413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.83 : 718.75 = 299.86 : x
  2. Step 2: Convert to fraction form
    520.83/718.75 = 299.86/x
  3. Step 3: Cross multiply
    520.83x = 718.75 × 299.86
  4. Step 4: Simplify right side
    520.83x = 215,521.61
  5. Step 5: Solve for x
    x = 215,521.61/520.83
  6. Step 6: Final answer
    x = 413.80

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.