Home / 292.78-630.70

Finding the Third Proportional to 292.78 and 630.70

Calculator

Solution

The third proportional to 292.78 and 630.70 is: 1,358.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.78 : 630.70 = 630.70 : x
  2. Step 2: Convert to fraction form
    292.78/630.70 = 630.70/x
  3. Step 3: Cross multiply
    292.78x = 630.70 × 630.70
  4. Step 4: Simplify right side
    292.78x = 397,786.43
  5. Step 5: Solve for x
    x = 397,786.43/292.78
  6. Step 6: Final answer
    x = 1,358.65

Related Problems

Find third proportional to 146.39 and 315.35
Half scale
Find third proportional to 585.56 and 1,261.41
Double scale
Find third proportional to 295 and 635
Similar ratio
Find third proportional to 439.17 and 946.05
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.