Home / 476-521

Finding the Third Proportional to 476 and 521

Calculator

Solution

The third proportional to 476 and 521 is: 570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    476 : 521 = 521 : x
  2. Step 2: Convert to fraction form
    476/521 = 521/x
  3. Step 3: Cross multiply
    476x = 521 × 521
  4. Step 4: Simplify right side
    476x = 271,441
  5. Step 5: Solve for x
    x = 271,441/476
  6. Step 6: Final answer
    x = 570.25

Related Problems

Find third proportional to 238 and 260.50
Half scale
Find third proportional to 952 and 1,042
Double scale
Find third proportional to 478 and 523
Similar ratio
Find third proportional to 714 and 781.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.