Home / 414-455

Finding the Third Proportional to 414 and 455

Calculator

Solution

The third proportional to 414 and 455 is: 500.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    414 : 455 = 455 : x
  2. Step 2: Convert to fraction form
    414/455 = 455/x
  3. Step 3: Cross multiply
    414x = 455 × 455
  4. Step 4: Simplify right side
    414x = 207,025
  5. Step 5: Solve for x
    x = 207,025/414
  6. Step 6: Final answer
    x = 500.06

Related Problems

Find third proportional to 207 and 227.50
Half scale
Find third proportional to 828 and 910
Double scale
Find third proportional to 416 and 457
Similar ratio
Find third proportional to 621 and 682.50
1.5x scale

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.