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Finding the Fourth Proportional to 792.85, 1,094.12 and 438.79

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Solution

The fourth proportional to 792.85, 1,094.12 and 438.79 is: 605.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.85 : 1,094.12 = 438.79 : x
  2. Step 2: Convert to fraction form
    792.85/1,094.12 = 438.79/x
  3. Step 3: Cross multiply
    792.85x = 1,094.12 × 438.79
  4. Step 4: Simplify right side
    792.85x = 480,092.75
  5. Step 5: Solve for x
    x = 480,092.75/792.85
  6. Step 6: Final answer
    x = 605.53

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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.