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Finding the Fourth Proportional to 792.36, 1,190.16 and 698.40

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Solution

The fourth proportional to 792.36, 1,190.16 and 698.40 is: 1,049.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.36 : 1,190.16 = 698.40 : x
  2. Step 2: Convert to fraction form
    792.36/1,190.16 = 698.40/x
  3. Step 3: Cross multiply
    792.36x = 1,190.16 × 698.40
  4. Step 4: Simplify right side
    792.36x = 831,207.74
  5. Step 5: Solve for x
    x = 831,207.74/792.36
  6. Step 6: Final answer
    x = 1,049.03

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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.