Home / 338.72-466.56-319.72

Finding the Fourth Proportional to 338.72, 466.56 and 319.72

Calculator

Solution

The fourth proportional to 338.72, 466.56 and 319.72 is: 440.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.72 : 466.56 = 319.72 : x
  2. Step 2: Convert to fraction form
    338.72/466.56 = 319.72/x
  3. Step 3: Cross multiply
    338.72x = 466.56 × 319.72
  4. Step 4: Simplify right side
    338.72x = 149,168.56
  5. Step 5: Solve for x
    x = 149,168.56/338.72
  6. Step 6: Final answer
    x = 440.39

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.