Home / 498.11-687.25-298.89

Finding the Fourth Proportional to 498.11, 687.25 and 298.89

Calculator

Solution

The fourth proportional to 498.11, 687.25 and 298.89 is: 412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.11 : 687.25 = 298.89 : x
  2. Step 2: Convert to fraction form
    498.11/687.25 = 298.89/x
  3. Step 3: Cross multiply
    498.11x = 687.25 × 298.89
  4. Step 4: Simplify right side
    498.11x = 205,409.63
  5. Step 5: Solve for x
    x = 205,409.63/498.11
  6. Step 6: Final answer
    x = 412.38

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.