Home / 53.86-74.26-40.00

Finding the Fourth Proportional to 53.86, 74.26 and 40.00

Calculator

Solution

The fourth proportional to 53.86, 74.26 and 40.00 is: 55.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.86 : 74.26 = 40.00 : x
  2. Step 2: Convert to fraction form
    53.86/74.26 = 40.00/x
  3. Step 3: Cross multiply
    53.86x = 74.26 × 40.00
  4. Step 4: Simplify right side
    53.86x = 2,970.26
  5. Step 5: Solve for x
    x = 2,970.26/53.86
  6. Step 6: Final answer
    x = 55.15

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.