Home / 411.68-567.72-256.40

Finding the Fourth Proportional to 411.68, 567.72 and 256.40

Calculator

Solution

The fourth proportional to 411.68, 567.72 and 256.40 is: 353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.68 : 567.72 = 256.40 : x
  2. Step 2: Convert to fraction form
    411.68/567.72 = 256.40/x
  3. Step 3: Cross multiply
    411.68x = 567.72 × 256.40
  4. Step 4: Simplify right side
    411.68x = 145,563.41
  5. Step 5: Solve for x
    x = 145,563.41/411.68
  6. Step 6: Final answer
    x = 353.58

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.