Home / 435.28-653.46-338.08

Finding the Fourth Proportional to 435.28, 653.46 and 338.08

Calculator

Solution

The fourth proportional to 435.28, 653.46 and 338.08 is: 507.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.28 : 653.46 = 338.08 : x
  2. Step 2: Convert to fraction form
    435.28/653.46 = 338.08/x
  3. Step 3: Cross multiply
    435.28x = 653.46 × 338.08
  4. Step 4: Simplify right side
    435.28x = 220,921.76
  5. Step 5: Solve for x
    x = 220,921.76/435.28
  6. Step 6: Final answer
    x = 507.54

Related Problems

Find fourth proportional to 217.64, 326.73 and 169.04
Half scale
Find fourth proportional to 870.56, 1,306.92 and 676.16
Double scale
Find fourth proportional to 436.28, 654.96 and 339.08
Similar ratio
Find fourth proportional to 652.92, 980.19 and 507.12
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.