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Finding the Fourth Proportional to 792.59, 1,189.05 and 402.64

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Solution

The fourth proportional to 792.59, 1,189.05 and 402.64 is: 604.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.59 : 1,189.05 = 402.64 : x
  2. Step 2: Convert to fraction form
    792.59/1,189.05 = 402.64/x
  3. Step 3: Cross multiply
    792.59x = 1,189.05 × 402.64
  4. Step 4: Simplify right side
    792.59x = 478,759.09
  5. Step 5: Solve for x
    x = 478,759.09/792.59
  6. Step 6: Final answer
    x = 604.04

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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.