Home / 144-391.50

Finding the Third Proportional to 144 and 391.50

Calculator

Solution

The third proportional to 144 and 391.50 is: 1,064.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    144 : 391.50 = 391.50 : x
  2. Step 2: Convert to fraction form
    144/391.50 = 391.50/x
  3. Step 3: Cross multiply
    144x = 391.50 × 391.50
  4. Step 4: Simplify right side
    144x = 153,272.25
  5. Step 5: Solve for x
    x = 153,272.25/144
  6. Step 6: Final answer
    x = 1,064.39

Related Problems

Find third proportional to 72 and 195.75
Half scale
Find third proportional to 288 and 783
Double scale
Find third proportional to 146 and 397
Similar ratio
Find third proportional to 216 and 587.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.