Home / 288.98-398.41-190.66

Finding the Fourth Proportional to 288.98, 398.41 and 190.66

Calculator

Solution

The fourth proportional to 288.98, 398.41 and 190.66 is: 262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.98 : 398.41 = 190.66 : x
  2. Step 2: Convert to fraction form
    288.98/398.41 = 190.66/x
  3. Step 3: Cross multiply
    288.98x = 398.41 × 190.66
  4. Step 4: Simplify right side
    288.98x = 75,960.85
  5. Step 5: Solve for x
    x = 75,960.85/288.98
  6. Step 6: Final answer
    x = 262.86

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.