Home / 308-492.75

Finding the Third Proportional to 308 and 492.75

Calculator

Solution

The third proportional to 308 and 492.75 is: 788.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    308 : 492.75 = 492.75 : x
  2. Step 2: Convert to fraction form
    308/492.75 = 492.75/x
  3. Step 3: Cross multiply
    308x = 492.75 × 492.75
  4. Step 4: Simplify right side
    308x = 242,802.56
  5. Step 5: Solve for x
    x = 242,802.56/308
  6. Step 6: Final answer
    x = 788.32

Related Problems

Find third proportional to 154 and 246.38
Half scale
Find third proportional to 616 and 985.50
Double scale
Find third proportional to 310 and 496
Similar ratio
Find third proportional to 462 and 739.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.