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Finding the Fourth Proportional to 1,228.44, 1,842.80 and 362.75

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Solution

The fourth proportional to 1,228.44, 1,842.80 and 362.75 is: 544.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.44 : 1,842.80 = 362.75 : x
  2. Step 2: Convert to fraction form
    1,228.44/1,842.80 = 362.75/x
  3. Step 3: Cross multiply
    1,228.44x = 1,842.80 × 362.75
  4. Step 4: Simplify right side
    1,228.44x = 668,478.49
  5. Step 5: Solve for x
    x = 668,478.49/1,228.44
  6. Step 6: Final answer
    x = 544.17

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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.