Home / 379.76-569.76-187.28

Finding the Fourth Proportional to 379.76, 569.76 and 187.28

Calculator

Solution

The fourth proportional to 379.76, 569.76 and 187.28 is: 280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.76 : 569.76 = 187.28 : x
  2. Step 2: Convert to fraction form
    379.76/569.76 = 187.28/x
  3. Step 3: Cross multiply
    379.76x = 569.76 × 187.28
  4. Step 4: Simplify right side
    379.76x = 106,704.65
  5. Step 5: Solve for x
    x = 106,704.65/379.76
  6. Step 6: Final answer
    x = 280.98

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.