Home / 450-675-354

Finding the Fourth Proportional to 450, 675 and 354

Calculator

Solution

The fourth proportional to 450, 675 and 354 is: 531

Step by Step Solution

  1. Step 1: Write the proportion equation
    450 : 675 = 354 : x
  2. Step 2: Convert to fraction form
    450/675 = 354/x
  3. Step 3: Cross multiply
    450x = 675 × 354
  4. Step 4: Simplify right side
    450x = 238,950
  5. Step 5: Solve for x
    x = 238,950/450
  6. Step 6: Final answer
    x = 531

Related Problems

Find fourth proportional to 225, 337.50 and 177
Half scale
Find fourth proportional to 900, 1,350 and 708
Double scale
Find fourth proportional to 451, 676.50 and 355
Similar ratio
Find fourth proportional to 675, 1,012.50 and 531
1.5x scale

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.