Home / 227-312.42-187.34

Finding the Fourth Proportional to 227, 312.42 and 187.34

Calculator

Solution

The fourth proportional to 227, 312.42 and 187.34 is: 257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    227 : 312.42 = 187.34 : x
  2. Step 2: Convert to fraction form
    227/312.42 = 187.34/x
  3. Step 3: Cross multiply
    227x = 312.42 × 187.34
  4. Step 4: Simplify right side
    227x = 58,528.76
  5. Step 5: Solve for x
    x = 58,528.76/227
  6. Step 6: Final answer
    x = 257.84

Related Problems

Find fourth proportional to 113.50, 156.21 and 93.67
Half scale
Find fourth proportional to 454, 624.84 and 374.68
Double scale
Find fourth proportional to 228, 313.80 and 188.34
Similar ratio
Find fourth proportional to 340.50, 468.63 and 281.01
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.