Home / 134.60-290.70

Finding the Third Proportional to 134.60 and 290.70

Calculator

Solution

The third proportional to 134.60 and 290.70 is: 627.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.60 : 290.70 = 290.70 : x
  2. Step 2: Convert to fraction form
    134.60/290.70 = 290.70/x
  3. Step 3: Cross multiply
    134.60x = 290.70 × 290.70
  4. Step 4: Simplify right side
    134.60x = 84,503.76
  5. Step 5: Solve for x
    x = 84,503.76/134.60
  6. Step 6: Final answer
    x = 627.81

Related Problems

Find third proportional to 67.30 and 145.35
Half scale
Find third proportional to 269.20 and 581.39
Double scale
Find third proportional to 137 and 295
Similar ratio
Find third proportional to 201.90 and 436.04
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.