Home / 1,343.12-2,014.95-418.64

Finding the Fourth Proportional to 1,343.12, 2,014.95 and 418.64

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Solution

The fourth proportional to 1,343.12, 2,014.95 and 418.64 is: 628.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.12 : 2,014.95 = 418.64 : x
  2. Step 2: Convert to fraction form
    1,343.12/2,014.95 = 418.64/x
  3. Step 3: Cross multiply
    1,343.12x = 2,014.95 × 418.64
  4. Step 4: Simplify right side
    1,343.12x = 843,528.59
  5. Step 5: Solve for x
    x = 843,528.59/1,343.12
  6. Step 6: Final answer
    x = 628.04

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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.