Home / 721.04-1,081.56-464

Finding the Fourth Proportional to 721.04, 1,081.56 and 464

Calculator

Solution

The fourth proportional to 721.04, 1,081.56 and 464 is: 696

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.04 : 1,081.56 = 464 : x
  2. Step 2: Convert to fraction form
    721.04/1,081.56 = 464/x
  3. Step 3: Cross multiply
    721.04x = 1,081.56 × 464
  4. Step 4: Simplify right side
    721.04x = 501,843.84
  5. Step 5: Solve for x
    x = 501,843.84/721.04
  6. Step 6: Final answer
    x = 696

Related Problems

Find fourth proportional to 360.52, 540.78 and 232
Half scale
Find fourth proportional to 1,442.08, 2,163.12 and 928
Double scale
Find fourth proportional to 722.04, 1,083.06 and 465
Similar ratio
Find fourth proportional to 1,081.56, 1,622.34 and 696
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.