Home / 393.49-590-119.50

Finding the Fourth Proportional to 393.49, 590 and 119.50

Calculator

Solution

The fourth proportional to 393.49, 590 and 119.50 is: 179.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.49 : 590 = 119.50 : x
  2. Step 2: Convert to fraction form
    393.49/590 = 119.50/x
  3. Step 3: Cross multiply
    393.49x = 590 × 119.50
  4. Step 4: Simplify right side
    393.49x = 70,505
  5. Step 5: Solve for x
    x = 70,505/393.49
  6. Step 6: Final answer
    x = 179.18

Related Problems

Find fourth proportional to 196.75, 295 and 59.75
Half scale
Find fourth proportional to 786.98, 1,180 and 239
Double scale
Find fourth proportional to 394.49, 591.50 and 120.50
Similar ratio
Find fourth proportional to 590.24, 885 and 179.25
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.