Home / 686.92-1,030.28-199.84

Finding the Fourth Proportional to 686.92, 1,030.28 and 199.84

Calculator

Solution

The fourth proportional to 686.92, 1,030.28 and 199.84 is: 299.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    686.92 : 1,030.28 = 199.84 : x
  2. Step 2: Convert to fraction form
    686.92/1,030.28 = 199.84/x
  3. Step 3: Cross multiply
    686.92x = 1,030.28 × 199.84
  4. Step 4: Simplify right side
    686.92x = 205,891.16
  5. Step 5: Solve for x
    x = 205,891.16/686.92
  6. Step 6: Final answer
    x = 299.73

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.