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Finding the Fourth Proportional to 788.50, 1,182.76 and 275.50

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Solution

The fourth proportional to 788.50, 1,182.76 and 275.50 is: 413.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.50 : 1,182.76 = 275.50 : x
  2. Step 2: Convert to fraction form
    788.50/1,182.76 = 275.50/x
  3. Step 3: Cross multiply
    788.50x = 1,182.76 × 275.50
  4. Step 4: Simplify right side
    788.50x = 325,850.38
  5. Step 5: Solve for x
    x = 325,850.38/788.50
  6. Step 6: Final answer
    x = 413.25

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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.