Home / 227.80-314.50-134.55

Finding the Fourth Proportional to 227.80, 314.50 and 134.55

Calculator

Solution

The fourth proportional to 227.80, 314.50 and 134.55 is: 185.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.80 : 314.50 = 134.55 : x
  2. Step 2: Convert to fraction form
    227.80/314.50 = 134.55/x
  3. Step 3: Cross multiply
    227.80x = 314.50 × 134.55
  4. Step 4: Simplify right side
    227.80x = 42,315.98
  5. Step 5: Solve for x
    x = 42,315.98/227.80
  6. Step 6: Final answer
    x = 185.76

Related Problems

Find fourth proportional to 113.90, 157.25 and 67.28
Half scale
Find fourth proportional to 455.60, 629 and 269.10
Double scale
Find fourth proportional to 228.80, 315.88 and 135.55
Similar ratio
Find fourth proportional to 341.70, 471.75 and 201.83
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.