Home / 437-655.26-389

Finding the Fourth Proportional to 437, 655.26 and 389

Calculator

Solution

The fourth proportional to 437, 655.26 and 389 is: 583.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    437 : 655.26 = 389 : x
  2. Step 2: Convert to fraction form
    437/655.26 = 389/x
  3. Step 3: Cross multiply
    437x = 655.26 × 389
  4. Step 4: Simplify right side
    437x = 254,896.14
  5. Step 5: Solve for x
    x = 254,896.14/437
  6. Step 6: Final answer
    x = 583.29

Related Problems

Find fourth proportional to 218.50, 327.63 and 194.50
Half scale
Find fourth proportional to 874, 1,310.52 and 778
Double scale
Find fourth proportional to 438, 656.76 and 390
Similar ratio
Find fourth proportional to 655.50, 982.89 and 583.50
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.