Home / 451.96-678.02-221.26

Finding the Fourth Proportional to 451.96, 678.02 and 221.26

Calculator

Solution

The fourth proportional to 451.96, 678.02 and 221.26 is: 331.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.96 : 678.02 = 221.26 : x
  2. Step 2: Convert to fraction form
    451.96/678.02 = 221.26/x
  3. Step 3: Cross multiply
    451.96x = 678.02 × 221.26
  4. Step 4: Simplify right side
    451.96x = 150,018.71
  5. Step 5: Solve for x
    x = 150,018.71/451.96
  6. Step 6: Final answer
    x = 331.93

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.