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Finding the Fourth Proportional to 1,141.38, 1,712.07 and 275.70

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Solution

The fourth proportional to 1,141.38, 1,712.07 and 275.70 is: 413.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.38 : 1,712.07 = 275.70 : x
  2. Step 2: Convert to fraction form
    1,141.38/1,712.07 = 275.70/x
  3. Step 3: Cross multiply
    1,141.38x = 1,712.07 × 275.70
  4. Step 4: Simplify right side
    1,141.38x = 472,010.84
  5. Step 5: Solve for x
    x = 472,010.84/1,141.38
  6. Step 6: Final answer
    x = 413.54

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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.