Home / 628.92-867.85-349.09

Finding the Fourth Proportional to 628.92, 867.85 and 349.09

Calculator

Solution

The fourth proportional to 628.92, 867.85 and 349.09 is: 481.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.92 : 867.85 = 349.09 : x
  2. Step 2: Convert to fraction form
    628.92/867.85 = 349.09/x
  3. Step 3: Cross multiply
    628.92x = 867.85 × 349.09
  4. Step 4: Simplify right side
    628.92x = 302,954.71
  5. Step 5: Solve for x
    x = 302,954.71/628.92
  6. Step 6: Final answer
    x = 481.71

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.