Home / 677-991.50

Finding the Third Proportional to 677 and 991.50

Calculator

Solution

The third proportional to 677 and 991.50 is: 1,452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    677 : 991.50 = 991.50 : x
  2. Step 2: Convert to fraction form
    677/991.50 = 991.50/x
  3. Step 3: Cross multiply
    677x = 991.50 × 991.50
  4. Step 4: Simplify right side
    677x = 983,072.25
  5. Step 5: Solve for x
    x = 983,072.25/677
  6. Step 6: Final answer
    x = 1,452.10

Related Problems

Find third proportional to 338.50 and 495.75
Half scale
Find third proportional to 1,354 and 1,983
Double scale
Find third proportional to 679 and 994
Similar ratio
Find third proportional to 1,015.50 and 1,487.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.