Home / 332-489

Finding the Third Proportional to 332 and 489

Calculator

Solution

The third proportional to 332 and 489 is: 720.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    332 : 489 = 489 : x
  2. Step 2: Convert to fraction form
    332/489 = 489/x
  3. Step 3: Cross multiply
    332x = 489 × 489
  4. Step 4: Simplify right side
    332x = 239,121
  5. Step 5: Solve for x
    x = 239,121/332
  6. Step 6: Final answer
    x = 720.24

Related Problems

Find third proportional to 166 and 244.50
Half scale
Find third proportional to 664 and 978
Double scale
Find third proportional to 334 and 492
Similar ratio
Find third proportional to 498 and 733.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.