Home / 277.74-414-260.28

Finding the Fourth Proportional to 277.74, 414 and 260.28

Calculator

Solution

The fourth proportional to 277.74, 414 and 260.28 is: 387.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.74 : 414 = 260.28 : x
  2. Step 2: Convert to fraction form
    277.74/414 = 260.28/x
  3. Step 3: Cross multiply
    277.74x = 414 × 260.28
  4. Step 4: Simplify right side
    277.74x = 107,755.92
  5. Step 5: Solve for x
    x = 107,755.92/277.74
  6. Step 6: Final answer
    x = 387.97

Related Problems

Find fourth proportional to 138.87, 207 and 130.14
Half scale
Find fourth proportional to 555.48, 828 and 520.56
Double scale
Find fourth proportional to 278.74, 415.49 and 261.28
Similar ratio
Find fourth proportional to 416.61, 621 and 390.42
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.