Home / 181.50-490

Finding the Third Proportional to 181.50 and 490

Calculator

Solution

The third proportional to 181.50 and 490 is: 1,322.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.50 : 490 = 490 : x
  2. Step 2: Convert to fraction form
    181.50/490 = 490/x
  3. Step 3: Cross multiply
    181.50x = 490 × 490
  4. Step 4: Simplify right side
    181.50x = 240,100
  5. Step 5: Solve for x
    x = 240,100/181.50
  6. Step 6: Final answer
    x = 1,322.87

Related Problems

Find third proportional to 90.75 and 245
Half scale
Find third proportional to 363 and 980
Double scale
Find third proportional to 184 and 495
Similar ratio
Find third proportional to 272.25 and 735
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.