Home / 925-1,387.50-275.74

Finding the Fourth Proportional to 925, 1,387.50 and 275.74

Calculator

Solution

The fourth proportional to 925, 1,387.50 and 275.74 is: 413.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    925 : 1,387.50 = 275.74 : x
  2. Step 2: Convert to fraction form
    925/1,387.50 = 275.74/x
  3. Step 3: Cross multiply
    925x = 1,387.50 × 275.74
  4. Step 4: Simplify right side
    925x = 382,589.25
  5. Step 5: Solve for x
    x = 382,589.25/925
  6. Step 6: Final answer
    x = 413.61

Related Problems

Find fourth proportional to 462.50, 693.75 and 137.87
Half scale
Find fourth proportional to 1,850, 2,775 and 551.48
Double scale
Find fourth proportional to 926, 1,389 and 276.74
Similar ratio
Find fourth proportional to 1,387.50, 2,081.25 and 413.61
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.