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Finding the Fourth Proportional to 1,228.46, 1,843.45 and 488.42

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Solution

The fourth proportional to 1,228.46, 1,843.45 and 488.42 is: 732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.46 : 1,843.45 = 488.42 : x
  2. Step 2: Convert to fraction form
    1,228.46/1,843.45 = 488.42/x
  3. Step 3: Cross multiply
    1,228.46x = 1,843.45 × 488.42
  4. Step 4: Simplify right side
    1,228.46x = 900,381.24
  5. Step 5: Solve for x
    x = 900,381.24/1,228.46
  6. Step 6: Final answer
    x = 732.94

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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.