Home / 815.75-887.75

Finding the Third Proportional to 815.75 and 887.75

Calculator

Solution

The third proportional to 815.75 and 887.75 is: 966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815.75 : 887.75 = 887.75 : x
  2. Step 2: Convert to fraction form
    815.75/887.75 = 887.75/x
  3. Step 3: Cross multiply
    815.75x = 887.75 × 887.75
  4. Step 4: Simplify right side
    815.75x = 788,100.06
  5. Step 5: Solve for x
    x = 788,100.06/815.75
  6. Step 6: Final answer
    x = 966.10

Related Problems

Find third proportional to 407.88 and 443.88
Half scale
Find third proportional to 1,631.50 and 1,775.50
Double scale
Find third proportional to 818 and 890
Similar ratio
Find third proportional to 1,223.63 and 1,331.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.