Home / 179.40-279.07

Finding the Third Proportional to 179.40 and 279.07

Calculator

Solution

The third proportional to 179.40 and 279.07 is: 434.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.40 : 279.07 = 279.07 : x
  2. Step 2: Convert to fraction form
    179.40/279.07 = 279.07/x
  3. Step 3: Cross multiply
    179.40x = 279.07 × 279.07
  4. Step 4: Simplify right side
    179.40x = 77,880.24
  5. Step 5: Solve for x
    x = 77,880.24/179.40
  6. Step 6: Final answer
    x = 434.11

Related Problems

Find third proportional to 89.70 and 139.54
Half scale
Find third proportional to 358.80 and 558.14
Double scale
Find third proportional to 181 and 282
Similar ratio
Find third proportional to 269.10 and 418.61
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.