Home / 676-1,014-388.18

Finding the Fourth Proportional to 676, 1,014 and 388.18

Calculator

Solution

The fourth proportional to 676, 1,014 and 388.18 is: 582.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    676 : 1,014 = 388.18 : x
  2. Step 2: Convert to fraction form
    676/1,014 = 388.18/x
  3. Step 3: Cross multiply
    676x = 1,014 × 388.18
  4. Step 4: Simplify right side
    676x = 393,614.52
  5. Step 5: Solve for x
    x = 393,614.52/676
  6. Step 6: Final answer
    x = 582.27

Related Problems

Find fourth proportional to 338, 507 and 194.09
Half scale
Find fourth proportional to 1,352, 2,028 and 776.36
Double scale
Find fourth proportional to 677, 1,015.50 and 389.18
Similar ratio
Find fourth proportional to 1,014, 1,521 and 582.27
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.