Home / 708.04-978.02-486.61

Finding the Fourth Proportional to 708.04, 978.02 and 486.61

Calculator

Solution

The fourth proportional to 708.04, 978.02 and 486.61 is: 672.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.04 : 978.02 = 486.61 : x
  2. Step 2: Convert to fraction form
    708.04/978.02 = 486.61/x
  3. Step 3: Cross multiply
    708.04x = 978.02 × 486.61
  4. Step 4: Simplify right side
    708.04x = 475,914.00
  5. Step 5: Solve for x
    x = 475,914.00/708.04
  6. Step 6: Final answer
    x = 672.16

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.