Home / 474.75-615.75

Finding the Third Proportional to 474.75 and 615.75

Calculator

Solution

The third proportional to 474.75 and 615.75 is: 798.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.75 : 615.75 = 615.75 : x
  2. Step 2: Convert to fraction form
    474.75/615.75 = 615.75/x
  3. Step 3: Cross multiply
    474.75x = 615.75 × 615.75
  4. Step 4: Simplify right side
    474.75x = 379,148.06
  5. Step 5: Solve for x
    x = 379,148.06/474.75
  6. Step 6: Final answer
    x = 798.63

Related Problems

Find third proportional to 237.38 and 307.88
Half scale
Find third proportional to 949.50 and 1,231.50
Double scale
Find third proportional to 477 and 618
Similar ratio
Find third proportional to 712.13 and 923.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.