Home / 284.50-440.38

Finding the Third Proportional to 284.50 and 440.38

Calculator

Solution

The third proportional to 284.50 and 440.38 is: 681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.50 : 440.38 = 440.38 : x
  2. Step 2: Convert to fraction form
    284.50/440.38 = 440.38/x
  3. Step 3: Cross multiply
    284.50x = 440.38 × 440.38
  4. Step 4: Simplify right side
    284.50x = 193,930.14
  5. Step 5: Solve for x
    x = 193,930.14/284.50
  6. Step 6: Final answer
    x = 681.65

Related Problems

Find third proportional to 142.25 and 220.19
Half scale
Find third proportional to 569 and 880.75
Double scale
Find third proportional to 287 and 443
Similar ratio
Find third proportional to 426.75 and 660.56
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.