Home / 441-661.68-270

Finding the Fourth Proportional to 441, 661.68 and 270

Calculator

Solution

The fourth proportional to 441, 661.68 and 270 is: 405.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    441 : 661.68 = 270 : x
  2. Step 2: Convert to fraction form
    441/661.68 = 270/x
  3. Step 3: Cross multiply
    441x = 661.68 × 270
  4. Step 4: Simplify right side
    441x = 178,653.60
  5. Step 5: Solve for x
    x = 178,653.60/441
  6. Step 6: Final answer
    x = 405.11

Related Problems

Find fourth proportional to 220.50, 330.84 and 135
Half scale
Find fourth proportional to 882, 1,323.36 and 540
Double scale
Find fourth proportional to 442, 663.18 and 271
Similar ratio
Find fourth proportional to 661.50, 992.52 and 405
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.