Home / 421.36-632.44-190.50

Finding the Fourth Proportional to 421.36, 632.44 and 190.50

Calculator

Solution

The fourth proportional to 421.36, 632.44 and 190.50 is: 285.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421.36 : 632.44 = 190.50 : x
  2. Step 2: Convert to fraction form
    421.36/632.44 = 190.50/x
  3. Step 3: Cross multiply
    421.36x = 632.44 × 190.50
  4. Step 4: Simplify right side
    421.36x = 120,479.82
  5. Step 5: Solve for x
    x = 120,479.82/421.36
  6. Step 6: Final answer
    x = 285.93

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.