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Finding the Fourth Proportional to 1,095.38, 1,643.04 and 273.65

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Solution

The fourth proportional to 1,095.38, 1,643.04 and 273.65 is: 410.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.38 : 1,643.04 = 273.65 : x
  2. Step 2: Convert to fraction form
    1,095.38/1,643.04 = 273.65/x
  3. Step 3: Cross multiply
    1,095.38x = 1,643.04 × 273.65
  4. Step 4: Simplify right side
    1,095.38x = 449,609.68
  5. Step 5: Solve for x
    x = 449,609.68/1,095.38
  6. Step 6: Final answer
    x = 410.46

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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.