Home / 848.40-1,272.80-271.28

Finding the Fourth Proportional to 848.40, 1,272.80 and 271.28

Calculator

Solution

The fourth proportional to 848.40, 1,272.80 and 271.28 is: 406.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.40 : 1,272.80 = 271.28 : x
  2. Step 2: Convert to fraction form
    848.40/1,272.80 = 271.28/x
  3. Step 3: Cross multiply
    848.40x = 1,272.80 × 271.28
  4. Step 4: Simplify right side
    848.40x = 345,285.18
  5. Step 5: Solve for x
    x = 345,285.18/848.40
  6. Step 6: Final answer
    x = 406.98

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.