Home / 487.25-745.38

Finding the Third Proportional to 487.25 and 745.38

Calculator

Solution

The third proportional to 487.25 and 745.38 is: 1,140.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.25 : 745.38 = 745.38 : x
  2. Step 2: Convert to fraction form
    487.25/745.38 = 745.38/x
  3. Step 3: Cross multiply
    487.25x = 745.38 × 745.38
  4. Step 4: Simplify right side
    487.25x = 555,583.89
  5. Step 5: Solve for x
    x = 555,583.89/487.25
  6. Step 6: Final answer
    x = 1,140.24

Related Problems

Find third proportional to 243.63 and 372.69
Half scale
Find third proportional to 974.50 and 1,490.75
Double scale
Find third proportional to 489 and 748
Similar ratio
Find third proportional to 730.88 and 1,118.06
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.