Home / 517-570

Finding the Third Proportional to 517 and 570

Calculator

Solution

The third proportional to 517 and 570 is: 628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    517 : 570 = 570 : x
  2. Step 2: Convert to fraction form
    517/570 = 570/x
  3. Step 3: Cross multiply
    517x = 570 × 570
  4. Step 4: Simplify right side
    517x = 324,900
  5. Step 5: Solve for x
    x = 324,900/517
  6. Step 6: Final answer
    x = 628.43

Related Problems

Find third proportional to 258.50 and 285
Half scale
Find third proportional to 1,034 and 1,140
Double scale
Find third proportional to 519 and 572
Similar ratio
Find third proportional to 775.50 and 855
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.