Home / 388.41-587.02-381.69

Finding the Fourth Proportional to 388.41, 587.02 and 381.69

Calculator

Solution

The fourth proportional to 388.41, 587.02 and 381.69 is: 576.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.41 : 587.02 = 381.69 : x
  2. Step 2: Convert to fraction form
    388.41/587.02 = 381.69/x
  3. Step 3: Cross multiply
    388.41x = 587.02 × 381.69
  4. Step 4: Simplify right side
    388.41x = 224,058.71
  5. Step 5: Solve for x
    x = 224,058.71/388.41
  6. Step 6: Final answer
    x = 576.86

Related Problems

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.