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Finding the Fourth Proportional to 791.90, 1,188.02 and 244.16

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Solution

The fourth proportional to 791.90, 1,188.02 and 244.16 is: 366.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.90 : 1,188.02 = 244.16 : x
  2. Step 2: Convert to fraction form
    791.90/1,188.02 = 244.16/x
  3. Step 3: Cross multiply
    791.90x = 1,188.02 × 244.16
  4. Step 4: Simplify right side
    791.90x = 290,066.96
  5. Step 5: Solve for x
    x = 290,066.96/791.90
  6. Step 6: Final answer
    x = 366.29

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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.