Home / 397-435

Finding the Third Proportional to 397 and 435

Calculator

Solution

The third proportional to 397 and 435 is: 476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    397 : 435 = 435 : x
  2. Step 2: Convert to fraction form
    397/435 = 435/x
  3. Step 3: Cross multiply
    397x = 435 × 435
  4. Step 4: Simplify right side
    397x = 189,225
  5. Step 5: Solve for x
    x = 189,225/397
  6. Step 6: Final answer
    x = 476.64

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.