Home / 558.50-818.75

Finding the Third Proportional to 558.50 and 818.75

Calculator

Solution

The third proportional to 558.50 and 818.75 is: 1,200.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.50 : 818.75 = 818.75 : x
  2. Step 2: Convert to fraction form
    558.50/818.75 = 818.75/x
  3. Step 3: Cross multiply
    558.50x = 818.75 × 818.75
  4. Step 4: Simplify right side
    558.50x = 670,351.56
  5. Step 5: Solve for x
    x = 670,351.56/558.50
  6. Step 6: Final answer
    x = 1,200.27

Related Problems

Find third proportional to 279.25 and 409.38
Half scale
Find third proportional to 1,117 and 1,637.50
Double scale
Find third proportional to 561 and 822
Similar ratio
Find third proportional to 837.75 and 1,228.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.