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Finding the Fourth Proportional to 794.37, 1,190.67 and 785.70

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Solution

The fourth proportional to 794.37, 1,190.67 and 785.70 is: 1,177.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.37 : 1,190.67 = 785.70 : x
  2. Step 2: Convert to fraction form
    794.37/1,190.67 = 785.70/x
  3. Step 3: Cross multiply
    794.37x = 1,190.67 × 785.70
  4. Step 4: Simplify right side
    794.37x = 935,509.42
  5. Step 5: Solve for x
    x = 935,509.42/794.37
  6. Step 6: Final answer
    x = 1,177.67

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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.