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Finding the Fourth Proportional to 786.38, 1,180.01 and 369.84

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Solution

The fourth proportional to 786.38, 1,180.01 and 369.84 is: 554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    786.38 : 1,180.01 = 369.84 : x
  2. Step 2: Convert to fraction form
    786.38/1,180.01 = 369.84/x
  3. Step 3: Cross multiply
    786.38x = 1,180.01 × 369.84
  4. Step 4: Simplify right side
    786.38x = 436,415.82
  5. Step 5: Solve for x
    x = 436,415.82/786.38
  6. Step 6: Final answer
    x = 554.97

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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.