Home / 686.58-1,030.05-301.92

Finding the Fourth Proportional to 686.58, 1,030.05 and 301.92

Calculator

Solution

The fourth proportional to 686.58, 1,030.05 and 301.92 is: 452.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    686.58 : 1,030.05 = 301.92 : x
  2. Step 2: Convert to fraction form
    686.58/1,030.05 = 301.92/x
  3. Step 3: Cross multiply
    686.58x = 1,030.05 × 301.92
  4. Step 4: Simplify right side
    686.58x = 310,992.70
  5. Step 5: Solve for x
    x = 310,992.70/686.58
  6. Step 6: Final answer
    x = 452.96

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.