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Finding the Fourth Proportional to 942.47, 1,413.69 and 249.12

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Solution

The fourth proportional to 942.47, 1,413.69 and 249.12 is: 373.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.47 : 1,413.69 = 249.12 : x
  2. Step 2: Convert to fraction form
    942.47/1,413.69 = 249.12/x
  3. Step 3: Cross multiply
    942.47x = 1,413.69 × 249.12
  4. Step 4: Simplify right side
    942.47x = 352,177.52
  5. Step 5: Solve for x
    x = 352,177.52/942.47
  6. Step 6: Final answer
    x = 373.68

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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.