Home / 254.50-394

Finding the Third Proportional to 254.50 and 394

Calculator

Solution

The third proportional to 254.50 and 394 is: 609.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.50 : 394 = 394 : x
  2. Step 2: Convert to fraction form
    254.50/394 = 394/x
  3. Step 3: Cross multiply
    254.50x = 394 × 394
  4. Step 4: Simplify right side
    254.50x = 155,236
  5. Step 5: Solve for x
    x = 155,236/254.50
  6. Step 6: Final answer
    x = 609.96

Related Problems

Find third proportional to 127.25 and 197
Half scale
Find third proportional to 509 and 788
Double scale
Find third proportional to 257 and 397
Similar ratio
Find third proportional to 381.75 and 591
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.