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Finding the Fourth Proportional to 852.05, 1,278.26 and 275.33

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Solution

The fourth proportional to 852.05, 1,278.26 and 275.33 is: 413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.05 : 1,278.26 = 275.33 : x
  2. Step 2: Convert to fraction form
    852.05/1,278.26 = 275.33/x
  3. Step 3: Cross multiply
    852.05x = 1,278.26 × 275.33
  4. Step 4: Simplify right side
    852.05x = 351,946.18
  5. Step 5: Solve for x
    x = 351,946.18/852.05
  6. Step 6: Final answer
    x = 413.06

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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.