Home / 719.15-1,078.50-256.87

Finding the Fourth Proportional to 719.15, 1,078.50 and 256.87

Calculator

Solution

The fourth proportional to 719.15, 1,078.50 and 256.87 is: 385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.15 : 1,078.50 = 256.87 : x
  2. Step 2: Convert to fraction form
    719.15/1,078.50 = 256.87/x
  3. Step 3: Cross multiply
    719.15x = 1,078.50 × 256.87
  4. Step 4: Simplify right side
    719.15x = 277,028.90
  5. Step 5: Solve for x
    x = 277,028.90/719.15
  6. Step 6: Final answer
    x = 385.22

Related Problems

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.