Home / 798.72-1,198.08-456

Finding the Fourth Proportional to 798.72, 1,198.08 and 456

Calculator

Solution

The fourth proportional to 798.72, 1,198.08 and 456 is: 684

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.72 : 1,198.08 = 456 : x
  2. Step 2: Convert to fraction form
    798.72/1,198.08 = 456/x
  3. Step 3: Cross multiply
    798.72x = 1,198.08 × 456
  4. Step 4: Simplify right side
    798.72x = 546,324.48
  5. Step 5: Solve for x
    x = 546,324.48/798.72
  6. Step 6: Final answer
    x = 684

Related Problems

Find fourth proportional to 399.36, 599.04 and 228
Half scale
Find fourth proportional to 1,597.44, 2,396.16 and 912
Double scale
Find fourth proportional to 799.72, 1,199.58 and 457
Similar ratio
Find fourth proportional to 1,198.08, 1,797.12 and 684
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.