Home / 686.82-948.03-392.29

Finding the Fourth Proportional to 686.82, 948.03 and 392.29

Calculator

Solution

The fourth proportional to 686.82, 948.03 and 392.29 is: 541.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    686.82 : 948.03 = 392.29 : x
  2. Step 2: Convert to fraction form
    686.82/948.03 = 392.29/x
  3. Step 3: Cross multiply
    686.82x = 948.03 × 392.29
  4. Step 4: Simplify right side
    686.82x = 371,895.99
  5. Step 5: Solve for x
    x = 371,895.99/686.82
  6. Step 6: Final answer
    x = 541.48

Related Problems

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.