Home / 576.75-618.75

Finding the Third Proportional to 576.75 and 618.75

Calculator

Solution

The third proportional to 576.75 and 618.75 is: 663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.75 : 618.75 = 618.75 : x
  2. Step 2: Convert to fraction form
    576.75/618.75 = 618.75/x
  3. Step 3: Cross multiply
    576.75x = 618.75 × 618.75
  4. Step 4: Simplify right side
    576.75x = 382,851.56
  5. Step 5: Solve for x
    x = 382,851.56/576.75
  6. Step 6: Final answer
    x = 663.81

Related Problems

Find third proportional to 288.38 and 309.38
Half scale
Find third proportional to 1,153.50 and 1,237.50
Double scale
Find third proportional to 579 and 621
Similar ratio
Find third proportional to 865.13 and 928.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.