Home / 483.75-690.75

Finding the Third Proportional to 483.75 and 690.75

Calculator

Solution

The third proportional to 483.75 and 690.75 is: 986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.75 : 690.75 = 690.75 : x
  2. Step 2: Convert to fraction form
    483.75/690.75 = 690.75/x
  3. Step 3: Cross multiply
    483.75x = 690.75 × 690.75
  4. Step 4: Simplify right side
    483.75x = 477,135.56
  5. Step 5: Solve for x
    x = 477,135.56/483.75
  6. Step 6: Final answer
    x = 986.33

Related Problems

Find third proportional to 241.88 and 345.38
Half scale
Find third proportional to 967.50 and 1,381.50
Double scale
Find third proportional to 486 and 694
Similar ratio
Find third proportional to 725.63 and 1,036.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.