Home / 486.48-670.96-388

Finding the Fourth Proportional to 486.48, 670.96 and 388

Calculator

Solution

The fourth proportional to 486.48, 670.96 and 388 is: 535.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.48 : 670.96 = 388 : x
  2. Step 2: Convert to fraction form
    486.48/670.96 = 388/x
  3. Step 3: Cross multiply
    486.48x = 670.96 × 388
  4. Step 4: Simplify right side
    486.48x = 260,332.48
  5. Step 5: Solve for x
    x = 260,332.48/486.48
  6. Step 6: Final answer
    x = 535.14

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.