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Finding the Fourth Proportional to 800.37, 1,193.58 and 765.54

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Solution

The fourth proportional to 800.37, 1,193.58 and 765.54 is: 1,141.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.37 : 1,193.58 = 765.54 : x
  2. Step 2: Convert to fraction form
    800.37/1,193.58 = 765.54/x
  3. Step 3: Cross multiply
    800.37x = 1,193.58 × 765.54
  4. Step 4: Simplify right side
    800.37x = 913,733.23
  5. Step 5: Solve for x
    x = 913,733.23/800.37
  6. Step 6: Final answer
    x = 1,141.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.