Home / 370.50-621.75

Finding the Third Proportional to 370.50 and 621.75

Calculator

Solution

The third proportional to 370.50 and 621.75 is: 1,043.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.50 : 621.75 = 621.75 : x
  2. Step 2: Convert to fraction form
    370.50/621.75 = 621.75/x
  3. Step 3: Cross multiply
    370.50x = 621.75 × 621.75
  4. Step 4: Simplify right side
    370.50x = 386,573.06
  5. Step 5: Solve for x
    x = 386,573.06/370.50
  6. Step 6: Final answer
    x = 1,043.38

Related Problems

Find third proportional to 185.25 and 310.88
Half scale
Find third proportional to 741 and 1,243.50
Double scale
Find third proportional to 373 and 625
Similar ratio
Find third proportional to 555.75 and 932.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.