Home / 281.50-505

Finding the Third Proportional to 281.50 and 505

Calculator

Solution

The third proportional to 281.50 and 505 is: 905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.50 : 505 = 505 : x
  2. Step 2: Convert to fraction form
    281.50/505 = 505/x
  3. Step 3: Cross multiply
    281.50x = 505 × 505
  4. Step 4: Simplify right side
    281.50x = 255,025
  5. Step 5: Solve for x
    x = 255,025/281.50
  6. Step 6: Final answer
    x = 905.95

Related Problems

Find third proportional to 140.75 and 252.50
Half scale
Find third proportional to 563 and 1,010
Double scale
Find third proportional to 284 and 509
Similar ratio
Find third proportional to 422.25 and 757.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.