Home / 337-505.18-256.20

Finding the Fourth Proportional to 337, 505.18 and 256.20

Calculator

Solution

The fourth proportional to 337, 505.18 and 256.20 is: 384.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    337 : 505.18 = 256.20 : x
  2. Step 2: Convert to fraction form
    337/505.18 = 256.20/x
  3. Step 3: Cross multiply
    337x = 505.18 × 256.20
  4. Step 4: Simplify right side
    337x = 129,427.12
  5. Step 5: Solve for x
    x = 129,427.12/337
  6. Step 6: Final answer
    x = 384.06

Related Problems

Find fourth proportional to 168.50, 252.59 and 128.10
Half scale
Find fourth proportional to 674, 1,010.36 and 512.40
Double scale
Find fourth proportional to 338, 506.68 and 257.20
Similar ratio
Find fourth proportional to 505.50, 757.77 and 384.30
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.