Home / 213.47-294.58-120.20

Finding the Fourth Proportional to 213.47, 294.58 and 120.20

Calculator

Solution

The fourth proportional to 213.47, 294.58 and 120.20 is: 165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.47 : 294.58 = 120.20 : x
  2. Step 2: Convert to fraction form
    213.47/294.58 = 120.20/x
  3. Step 3: Cross multiply
    213.47x = 294.58 × 120.20
  4. Step 4: Simplify right side
    213.47x = 35,408.95
  5. Step 5: Solve for x
    x = 35,408.95/213.47
  6. Step 6: Final answer
    x = 165.88

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.