Home / 260-392-239.52

Finding the Fourth Proportional to 260, 392 and 239.52

Calculator

Solution

The fourth proportional to 260, 392 and 239.52 is: 361.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260 : 392 = 239.52 : x
  2. Step 2: Convert to fraction form
    260/392 = 239.52/x
  3. Step 3: Cross multiply
    260x = 392 × 239.52
  4. Step 4: Simplify right side
    260x = 93,891.84
  5. Step 5: Solve for x
    x = 93,891.84/260
  6. Step 6: Final answer
    x = 361.12

Related Problems

Find fourth proportional to 130, 196 and 119.76
Half scale
Find fourth proportional to 520, 784 and 479.04
Double scale
Find fourth proportional to 261, 393.51 and 240.52
Similar ratio
Find fourth proportional to 390, 588 and 359.28
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.