Home / 523.91-785.46-280.64

Finding the Fourth Proportional to 523.91, 785.46 and 280.64

Calculator

Solution

The fourth proportional to 523.91, 785.46 and 280.64 is: 420.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.91 : 785.46 = 280.64 : x
  2. Step 2: Convert to fraction form
    523.91/785.46 = 280.64/x
  3. Step 3: Cross multiply
    523.91x = 785.46 × 280.64
  4. Step 4: Simplify right side
    523.91x = 220,431.49
  5. Step 5: Solve for x
    x = 220,431.49/523.91
  6. Step 6: Final answer
    x = 420.74

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.