Home / 274.75-423.50

Finding the Third Proportional to 274.75 and 423.50

Calculator

Solution

The third proportional to 274.75 and 423.50 is: 652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.75 : 423.50 = 423.50 : x
  2. Step 2: Convert to fraction form
    274.75/423.50 = 423.50/x
  3. Step 3: Cross multiply
    274.75x = 423.50 × 423.50
  4. Step 4: Simplify right side
    274.75x = 179,352.25
  5. Step 5: Solve for x
    x = 179,352.25/274.75
  6. Step 6: Final answer
    x = 652.78

Related Problems

Find third proportional to 137.38 and 211.75
Half scale
Find third proportional to 549.50 and 847
Double scale
Find third proportional to 277 and 427
Similar ratio
Find third proportional to 412.13 and 635.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.