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Finding the Fourth Proportional to 789.07, 1,182.44 and 528.18

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Solution

The fourth proportional to 789.07, 1,182.44 and 528.18 is: 791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.07 : 1,182.44 = 528.18 : x
  2. Step 2: Convert to fraction form
    789.07/1,182.44 = 528.18/x
  3. Step 3: Cross multiply
    789.07x = 1,182.44 × 528.18
  4. Step 4: Simplify right side
    789.07x = 624,541.16
  5. Step 5: Solve for x
    x = 624,541.16/789.07
  6. Step 6: Final answer
    x = 791.49

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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.