Home / 430-480

Finding the Third Proportional to 430 and 480

Calculator

Solution

The third proportional to 430 and 480 is: 535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    430 : 480 = 480 : x
  2. Step 2: Convert to fraction form
    430/480 = 480/x
  3. Step 3: Cross multiply
    430x = 480 × 480
  4. Step 4: Simplify right side
    430x = 230,400
  5. Step 5: Solve for x
    x = 230,400/430
  6. Step 6: Final answer
    x = 535.81

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.