Home / 852.50-1,278-365.87

Finding the Fourth Proportional to 852.50, 1,278 and 365.87

Calculator

Solution

The fourth proportional to 852.50, 1,278 and 365.87 is: 548.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.50 : 1,278 = 365.87 : x
  2. Step 2: Convert to fraction form
    852.50/1,278 = 365.87/x
  3. Step 3: Cross multiply
    852.50x = 1,278 × 365.87
  4. Step 4: Simplify right side
    852.50x = 467,575.47
  5. Step 5: Solve for x
    x = 467,575.47/852.50
  6. Step 6: Final answer
    x = 548.48

Related Problems

Find fourth proportional to 426.25, 639 and 182.93
Half scale
Find fourth proportional to 1,704.99, 2,556 and 731.73
Double scale
Find fourth proportional to 853.50, 1,279.50 and 366.87
Similar ratio
Find fourth proportional to 1,278.74, 1,917 and 548.80
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.