Home / 505.50-570

Finding the Third Proportional to 505.50 and 570

Calculator

Solution

The third proportional to 505.50 and 570 is: 642.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.50 : 570 = 570 : x
  2. Step 2: Convert to fraction form
    505.50/570 = 570/x
  3. Step 3: Cross multiply
    505.50x = 570 × 570
  4. Step 4: Simplify right side
    505.50x = 324,900
  5. Step 5: Solve for x
    x = 324,900/505.50
  6. Step 6: Final answer
    x = 642.73

Related Problems

Find third proportional to 252.75 and 285
Half scale
Find third proportional to 1,011 and 1,140
Double scale
Find third proportional to 508 and 572
Similar ratio
Find third proportional to 758.25 and 855
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.