Home / 263.69-395.54-71.31

Finding the Fourth Proportional to 263.69, 395.54 and 71.31

Calculator

Solution

The fourth proportional to 263.69, 395.54 and 71.31 is: 106.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.69 : 395.54 = 71.31 : x
  2. Step 2: Convert to fraction form
    263.69/395.54 = 71.31/x
  3. Step 3: Cross multiply
    263.69x = 395.54 × 71.31
  4. Step 4: Simplify right side
    263.69x = 28,205.96
  5. Step 5: Solve for x
    x = 28,205.96/263.69
  6. Step 6: Final answer
    x = 106.97

Related Problems

Find fourth proportional to 131.85, 197.77 and 35.66
Half scale
Find fourth proportional to 527.38, 791.08 and 142.62
Double scale
Find fourth proportional to 264.69, 397.04 and 72.31
Similar ratio
Find fourth proportional to 395.54, 593.31 and 106.97
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.