Home / 154-318.50

Finding the Third Proportional to 154 and 318.50

Calculator

Solution

The third proportional to 154 and 318.50 is: 658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154 : 318.50 = 318.50 : x
  2. Step 2: Convert to fraction form
    154/318.50 = 318.50/x
  3. Step 3: Cross multiply
    154x = 318.50 × 318.50
  4. Step 4: Simplify right side
    154x = 101,442.25
  5. Step 5: Solve for x
    x = 101,442.25/154
  6. Step 6: Final answer
    x = 658.72

Related Problems

Find third proportional to 77 and 159.25
Half scale
Find third proportional to 308 and 637
Double scale
Find third proportional to 156 and 323
Similar ratio
Find third proportional to 231 and 477.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.