Home / 400-453

Finding the Third Proportional to 400 and 453

Calculator

Solution

The third proportional to 400 and 453 is: 513.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    400 : 453 = 453 : x
  2. Step 2: Convert to fraction form
    400/453 = 453/x
  3. Step 3: Cross multiply
    400x = 453 × 453
  4. Step 4: Simplify right side
    400x = 205,209
  5. Step 5: Solve for x
    x = 205,209/400
  6. Step 6: Final answer
    x = 513.02

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.