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Finding the Fourth Proportional to 794.39, 1,190.28 and 764.01

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Solution

The fourth proportional to 794.39, 1,190.28 and 764.01 is: 1,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.39 : 1,190.28 = 764.01 : x
  2. Step 2: Convert to fraction form
    794.39/1,190.28 = 764.01/x
  3. Step 3: Cross multiply
    794.39x = 1,190.28 × 764.01
  4. Step 4: Simplify right side
    794.39x = 909,390.71
  5. Step 5: Solve for x
    x = 909,390.71/794.39
  6. Step 6: Final answer
    x = 1,144.77

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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.