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Finding the Fourth Proportional to 1,095.48, 1,643.17 and 273.75

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Solution

The fourth proportional to 1,095.48, 1,643.17 and 273.75 is: 410.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.48 : 1,643.17 = 273.75 : x
  2. Step 2: Convert to fraction form
    1,095.48/1,643.17 = 273.75/x
  3. Step 3: Cross multiply
    1,095.48x = 1,643.17 × 273.75
  4. Step 4: Simplify right side
    1,095.48x = 449,815.05
  5. Step 5: Solve for x
    x = 449,815.05/1,095.48
  6. Step 6: Final answer
    x = 410.61

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Double scale
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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.