Home / 484.50-686.75

Finding the Third Proportional to 484.50 and 686.75

Calculator

Solution

The third proportional to 484.50 and 686.75 is: 973.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.50 : 686.75 = 686.75 : x
  2. Step 2: Convert to fraction form
    484.50/686.75 = 686.75/x
  3. Step 3: Cross multiply
    484.50x = 686.75 × 686.75
  4. Step 4: Simplify right side
    484.50x = 471,625.56
  5. Step 5: Solve for x
    x = 471,625.56/484.50
  6. Step 6: Final answer
    x = 973.43

Related Problems

Find third proportional to 242.25 and 343.38
Half scale
Find third proportional to 969 and 1,373.50
Double scale
Find third proportional to 487 and 690
Similar ratio
Find third proportional to 726.75 and 1,030.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.