Home / 212.67-319.13-104.55

Finding the Fourth Proportional to 212.67, 319.13 and 104.55

Calculator

Solution

The fourth proportional to 212.67, 319.13 and 104.55 is: 156.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.67 : 319.13 = 104.55 : x
  2. Step 2: Convert to fraction form
    212.67/319.13 = 104.55/x
  3. Step 3: Cross multiply
    212.67x = 319.13 × 104.55
  4. Step 4: Simplify right side
    212.67x = 33,364.52
  5. Step 5: Solve for x
    x = 33,364.52/212.67
  6. Step 6: Final answer
    x = 156.88

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.