Home / 141.19-312.75

Finding the Third Proportional to 141.19 and 312.75

Calculator

Solution

The third proportional to 141.19 and 312.75 is: 692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.19 : 312.75 = 312.75 : x
  2. Step 2: Convert to fraction form
    141.19/312.75 = 312.75/x
  3. Step 3: Cross multiply
    141.19x = 312.75 × 312.75
  4. Step 4: Simplify right side
    141.19x = 97,812.56
  5. Step 5: Solve for x
    x = 97,812.56/141.19
  6. Step 6: Final answer
    x = 692.78

Related Problems

Find third proportional to 70.59 and 156.38
Half scale
Find third proportional to 282.38 and 625.50
Double scale
Find third proportional to 143 and 317
Similar ratio
Find third proportional to 211.78 and 469.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.