Home / 366-642.75

Finding the Third Proportional to 366 and 642.75

Calculator

Solution

The third proportional to 366 and 642.75 is: 1,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    366 : 642.75 = 642.75 : x
  2. Step 2: Convert to fraction form
    366/642.75 = 642.75/x
  3. Step 3: Cross multiply
    366x = 642.75 × 642.75
  4. Step 4: Simplify right side
    366x = 413,127.56
  5. Step 5: Solve for x
    x = 413,127.56/366
  6. Step 6: Final answer
    x = 1,128.76

Related Problems

Find third proportional to 183 and 321.38
Half scale
Find third proportional to 732 and 1,285.50
Double scale
Find third proportional to 368 and 646
Similar ratio
Find third proportional to 549 and 964.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.