Home / 492.42-738.49-167.78

Finding the Fourth Proportional to 492.42, 738.49 and 167.78

Calculator

Solution

The fourth proportional to 492.42, 738.49 and 167.78 is: 251.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.42 : 738.49 = 167.78 : x
  2. Step 2: Convert to fraction form
    492.42/738.49 = 167.78/x
  3. Step 3: Cross multiply
    492.42x = 738.49 × 167.78
  4. Step 4: Simplify right side
    492.42x = 123,903.85
  5. Step 5: Solve for x
    x = 123,903.85/492.42
  6. Step 6: Final answer
    x = 251.62

Related Problems

Find fourth proportional to 246.21, 369.25 and 83.89
Half scale
Find fourth proportional to 984.84, 1,476.98 and 335.56
Double scale
Find fourth proportional to 493.42, 739.99 and 168.78
Similar ratio
Find fourth proportional to 738.63, 1,107.74 and 251.67
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.