Home / 281.25-660

Finding the Third Proportional to 281.25 and 660

Calculator

Solution

The third proportional to 281.25 and 660 is: 1,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.25 : 660 = 660 : x
  2. Step 2: Convert to fraction form
    281.25/660 = 660/x
  3. Step 3: Cross multiply
    281.25x = 660 × 660
  4. Step 4: Simplify right side
    281.25x = 435,600
  5. Step 5: Solve for x
    x = 435,600/281.25
  6. Step 6: Final answer
    x = 1,548.80

Related Problems

Find third proportional to 140.63 and 330
Half scale
Find third proportional to 562.50 and 1,320
Double scale
Find third proportional to 283 and 665
Similar ratio
Find third proportional to 421.88 and 990
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.