Home / 132.68-290.88

Finding the Third Proportional to 132.68 and 290.88

Calculator

Solution

The third proportional to 132.68 and 290.88 is: 637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.68 : 290.88 = 290.88 : x
  2. Step 2: Convert to fraction form
    132.68/290.88 = 290.88/x
  3. Step 3: Cross multiply
    132.68x = 290.88 × 290.88
  4. Step 4: Simplify right side
    132.68x = 84,612.81
  5. Step 5: Solve for x
    x = 84,612.81/132.68
  6. Step 6: Final answer
    x = 637.72

Related Problems

Find third proportional to 66.34 and 145.44
Half scale
Find third proportional to 265.36 and 581.77
Double scale
Find third proportional to 135 and 295
Similar ratio
Find third proportional to 199.02 and 436.32
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.