Home / 253.31-393.56

Finding the Third Proportional to 253.31 and 393.56

Calculator

Solution

The third proportional to 253.31 and 393.56 is: 611.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.31 : 393.56 = 393.56 : x
  2. Step 2: Convert to fraction form
    253.31/393.56 = 393.56/x
  3. Step 3: Cross multiply
    253.31x = 393.56 × 393.56
  4. Step 4: Simplify right side
    253.31x = 154,891.44
  5. Step 5: Solve for x
    x = 154,891.44/253.31
  6. Step 6: Final answer
    x = 611.46

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.