Home / 872-1,308-264

Finding the Fourth Proportional to 872, 1,308 and 264

Calculator

Solution

The fourth proportional to 872, 1,308 and 264 is: 396

Step by Step Solution

  1. Step 1: Write the proportion equation
    872 : 1,308 = 264 : x
  2. Step 2: Convert to fraction form
    872/1,308 = 264/x
  3. Step 3: Cross multiply
    872x = 1,308 × 264
  4. Step 4: Simplify right side
    872x = 345,312
  5. Step 5: Solve for x
    x = 345,312/872
  6. Step 6: Final answer
    x = 396

Related Problems

Find fourth proportional to 436, 654 and 132
Half scale
Find fourth proportional to 1,744, 2,616 and 528
Double scale
Find fourth proportional to 873, 1,309.50 and 265
Similar ratio
Find fourth proportional to 1,308, 1,962 and 396
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.