Home / 682.20-957-682.20

Finding the Fourth Proportional to 682.20, 957 and 682.20

Calculator

Solution

The fourth proportional to 682.20, 957 and 682.20 is: 957

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.20 : 957 = 682.20 : x
  2. Step 2: Convert to fraction form
    682.20/957 = 682.20/x
  3. Step 3: Cross multiply
    682.20x = 957 × 682.20
  4. Step 4: Simplify right side
    682.20x = 652,865.40
  5. Step 5: Solve for x
    x = 652,865.40/682.20
  6. Step 6: Final answer
    x = 957

Related Problems

Find fourth proportional to 341.10, 478.50 and 341.10
Half scale
Find fourth proportional to 1,364.40, 1,914 and 1,364.40
Double scale
Find fourth proportional to 683.20, 958.40 and 683.20
Similar ratio
Find fourth proportional to 1,023.30, 1,435.50 and 1,023.30
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.