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Finding the Fourth Proportional to 942.44, 1,413.02 and 551.88

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Solution

The fourth proportional to 942.44, 1,413.02 and 551.88 is: 827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.44 : 1,413.02 = 551.88 : x
  2. Step 2: Convert to fraction form
    942.44/1,413.02 = 551.88/x
  3. Step 3: Cross multiply
    942.44x = 1,413.02 × 551.88
  4. Step 4: Simplify right side
    942.44x = 779,817.48
  5. Step 5: Solve for x
    x = 779,817.48/942.44
  6. Step 6: Final answer
    x = 827.45

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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.