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Finding the Fourth Proportional to 806.37, 1,112.65 and 452.31

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Solution

The fourth proportional to 806.37, 1,112.65 and 452.31 is: 624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.37 : 1,112.65 = 452.31 : x
  2. Step 2: Convert to fraction form
    806.37/1,112.65 = 452.31/x
  3. Step 3: Cross multiply
    806.37x = 1,112.65 × 452.31
  4. Step 4: Simplify right side
    806.37x = 503,262.72
  5. Step 5: Solve for x
    x = 503,262.72/806.37
  6. Step 6: Final answer
    x = 624.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.