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Finding the Fourth Proportional to 1,627.70, 2,441.54 and 805.75

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Solution

The fourth proportional to 1,627.70, 2,441.54 and 805.75 is: 1,208.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.70 : 2,441.54 = 805.75 : x
  2. Step 2: Convert to fraction form
    1,627.70/2,441.54 = 805.75/x
  3. Step 3: Cross multiply
    1,627.70x = 2,441.54 × 805.75
  4. Step 4: Simplify right side
    1,627.70x = 1,967,266.77
  5. Step 5: Solve for x
    x = 1,967,266.77/1,627.70
  6. Step 6: Final answer
    x = 1,208.62

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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.