Home / 1,216.18-1,824.22-436.15

Finding the Fourth Proportional to 1,216.18, 1,824.22 and 436.15

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Solution

The fourth proportional to 1,216.18, 1,824.22 and 436.15 is: 654.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.18 : 1,824.22 = 436.15 : x
  2. Step 2: Convert to fraction form
    1,216.18/1,824.22 = 436.15/x
  3. Step 3: Cross multiply
    1,216.18x = 1,824.22 × 436.15
  4. Step 4: Simplify right side
    1,216.18x = 795,633.55
  5. Step 5: Solve for x
    x = 795,633.55/1,216.18
  6. Step 6: Final answer
    x = 654.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.