Home / 215.64-323.44-71.34

Finding the Fourth Proportional to 215.64, 323.44 and 71.34

Calculator

Solution

The fourth proportional to 215.64, 323.44 and 71.34 is: 107.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.64 : 323.44 = 71.34 : x
  2. Step 2: Convert to fraction form
    215.64/323.44 = 71.34/x
  3. Step 3: Cross multiply
    215.64x = 323.44 × 71.34
  4. Step 4: Simplify right side
    215.64x = 23,074.21
  5. Step 5: Solve for x
    x = 23,074.21/215.64
  6. Step 6: Final answer
    x = 107.00

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.