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Finding the Fourth Proportional to 942.30, 1,413.39 and 357.06

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Solution

The fourth proportional to 942.30, 1,413.39 and 357.06 is: 535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.30 : 1,413.39 = 357.06 : x
  2. Step 2: Convert to fraction form
    942.30/1,413.39 = 357.06/x
  3. Step 3: Cross multiply
    942.30x = 1,413.39 × 357.06
  4. Step 4: Simplify right side
    942.30x = 504,665.03
  5. Step 5: Solve for x
    x = 504,665.03/942.30
  6. Step 6: Final answer
    x = 535.57

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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.