Home / 742-1,024-427.26

Finding the Fourth Proportional to 742, 1,024 and 427.26

Calculator

Solution

The fourth proportional to 742, 1,024 and 427.26 is: 589.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    742 : 1,024 = 427.26 : x
  2. Step 2: Convert to fraction form
    742/1,024 = 427.26/x
  3. Step 3: Cross multiply
    742x = 1,024 × 427.26
  4. Step 4: Simplify right side
    742x = 437,514.24
  5. Step 5: Solve for x
    x = 437,514.24/742
  6. Step 6: Final answer
    x = 589.64

Related Problems

Find fourth proportional to 371, 512 and 213.63
Half scale
Find fourth proportional to 1,484, 2,048 and 854.52
Double scale
Find fourth proportional to 743, 1,025.38 and 428.26
Similar ratio
Find fourth proportional to 1,113, 1,536 and 640.89
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.