Home / 756-1,043-475.76

Finding the Fourth Proportional to 756, 1,043 and 475.76

Calculator

Solution

The fourth proportional to 756, 1,043 and 475.76 is: 656.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    756 : 1,043 = 475.76 : x
  2. Step 2: Convert to fraction form
    756/1,043 = 475.76/x
  3. Step 3: Cross multiply
    756x = 1,043 × 475.76
  4. Step 4: Simplify right side
    756x = 496,217.68
  5. Step 5: Solve for x
    x = 496,217.68/756
  6. Step 6: Final answer
    x = 656.37

Related Problems

Find fourth proportional to 378, 521.50 and 237.88
Half scale
Find fourth proportional to 1,512, 2,086 and 951.52
Double scale
Find fourth proportional to 757, 1,044.38 and 476.76
Similar ratio
Find fourth proportional to 1,134, 1,564.50 and 713.64
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.