Home / 43.02-64.17-42.35

Finding the Fourth Proportional to 43.02, 64.17 and 42.35

Calculator

Solution

The fourth proportional to 43.02, 64.17 and 42.35 is: 63.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.02 : 64.17 = 42.35 : x
  2. Step 2: Convert to fraction form
    43.02/64.17 = 42.35/x
  3. Step 3: Cross multiply
    43.02x = 64.17 × 42.35
  4. Step 4: Simplify right side
    43.02x = 2,717.28
  5. Step 5: Solve for x
    x = 2,717.28/43.02
  6. Step 6: Final answer
    x = 63.16

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.