Home / 521.13-719.13-288.27

Finding the Fourth Proportional to 521.13, 719.13 and 288.27

Calculator

Solution

The fourth proportional to 521.13, 719.13 and 288.27 is: 397.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.13 : 719.13 = 288.27 : x
  2. Step 2: Convert to fraction form
    521.13/719.13 = 288.27/x
  3. Step 3: Cross multiply
    521.13x = 719.13 × 288.27
  4. Step 4: Simplify right side
    521.13x = 207,303.61
  5. Step 5: Solve for x
    x = 207,303.61/521.13
  6. Step 6: Final answer
    x = 397.80

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.