Home / 978.23-1,349.95-536.11

Finding the Fourth Proportional to 978.23, 1,349.95 and 536.11

Calculator

Solution

The fourth proportional to 978.23, 1,349.95 and 536.11 is: 739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    978.23 : 1,349.95 = 536.11 : x
  2. Step 2: Convert to fraction form
    978.23/1,349.95 = 536.11/x
  3. Step 3: Cross multiply
    978.23x = 1,349.95 × 536.11
  4. Step 4: Simplify right side
    978.23x = 723,721.69
  5. Step 5: Solve for x
    x = 723,721.69/978.23
  6. Step 6: Final answer
    x = 739.83

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.