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Finding the Fourth Proportional to 746.78, 1,119.62 and 376.34

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Solution

The fourth proportional to 746.78, 1,119.62 and 376.34 is: 564.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.78 : 1,119.62 = 376.34 : x
  2. Step 2: Convert to fraction form
    746.78/1,119.62 = 376.34/x
  3. Step 3: Cross multiply
    746.78x = 1,119.62 × 376.34
  4. Step 4: Simplify right side
    746.78x = 421,350.31
  5. Step 5: Solve for x
    x = 421,350.31/746.78
  6. Step 6: Final answer
    x = 564.23

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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.