Home / 302-660

Finding the Third Proportional to 302 and 660

Calculator

Solution

The third proportional to 302 and 660 is: 1,442.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    302 : 660 = 660 : x
  2. Step 2: Convert to fraction form
    302/660 = 660/x
  3. Step 3: Cross multiply
    302x = 660 × 660
  4. Step 4: Simplify right side
    302x = 435,600
  5. Step 5: Solve for x
    x = 435,600/302
  6. Step 6: Final answer
    x = 1,442.38

Related Problems

Find third proportional to 151 and 330
Half scale
Find third proportional to 604 and 1,320
Double scale
Find third proportional to 304 and 664
Similar ratio
Find third proportional to 453 and 990
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.