Home / 401.64-553.70-284.84

Finding the Fourth Proportional to 401.64, 553.70 and 284.84

Calculator

Solution

The fourth proportional to 401.64, 553.70 and 284.84 is: 392.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.64 : 553.70 = 284.84 : x
  2. Step 2: Convert to fraction form
    401.64/553.70 = 284.84/x
  3. Step 3: Cross multiply
    401.64x = 553.70 × 284.84
  4. Step 4: Simplify right side
    401.64x = 157,715.91
  5. Step 5: Solve for x
    x = 157,715.91/401.64
  6. Step 6: Final answer
    x = 392.68

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.