Home / 64.86-97.28-55.64

Finding the Fourth Proportional to 64.86, 97.28 and 55.64

Calculator

Solution

The fourth proportional to 64.86, 97.28 and 55.64 is: 83.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.86 : 97.28 = 55.64 : x
  2. Step 2: Convert to fraction form
    64.86/97.28 = 55.64/x
  3. Step 3: Cross multiply
    64.86x = 97.28 × 55.64
  4. Step 4: Simplify right side
    64.86x = 5,411.89
  5. Step 5: Solve for x
    x = 5,411.89/64.86
  6. Step 6: Final answer
    x = 83.44

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.