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Finding the Fourth Proportional to 957.75, 1,436.63 and 273.75

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Solution

The fourth proportional to 957.75, 1,436.63 and 273.75 is: 410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.75 : 1,436.63 = 273.75 : x
  2. Step 2: Convert to fraction form
    957.75/1,436.63 = 273.75/x
  3. Step 3: Cross multiply
    957.75x = 1,436.63 × 273.75
  4. Step 4: Simplify right side
    957.75x = 393,276.09
  5. Step 5: Solve for x
    x = 393,276.09/957.75
  6. Step 6: Final answer
    x = 410.63

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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.