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Finding the Fourth Proportional to 791.50, 1,185.08 and 531.14

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Solution

The fourth proportional to 791.50, 1,185.08 and 531.14 is: 795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.50 : 1,185.08 = 531.14 : x
  2. Step 2: Convert to fraction form
    791.50/1,185.08 = 531.14/x
  3. Step 3: Cross multiply
    791.50x = 1,185.08 × 531.14
  4. Step 4: Simplify right side
    791.50x = 629,443.39
  5. Step 5: Solve for x
    x = 629,443.39/791.50
  6. Step 6: Final answer
    x = 795.25

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Double scale
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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.