Home / 142.17-310.08

Finding the Third Proportional to 142.17 and 310.08

Calculator

Solution

The third proportional to 142.17 and 310.08 is: 676.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.17 : 310.08 = 310.08 : x
  2. Step 2: Convert to fraction form
    142.17/310.08 = 310.08/x
  3. Step 3: Cross multiply
    142.17x = 310.08 × 310.08
  4. Step 4: Simplify right side
    142.17x = 96,148.44
  5. Step 5: Solve for x
    x = 96,148.44/142.17
  6. Step 6: Final answer
    x = 676.28

Related Problems

Find third proportional to 71.09 and 155.04
Half scale
Find third proportional to 284.34 and 620.16
Double scale
Find third proportional to 144 and 314
Similar ratio
Find third proportional to 213.26 and 465.12
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.