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Finding the Fourth Proportional to 942.70, 1,413.22 and 325.98

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Solution

The fourth proportional to 942.70, 1,413.22 and 325.98 is: 488.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.70 : 1,413.22 = 325.98 : x
  2. Step 2: Convert to fraction form
    942.70/1,413.22 = 325.98/x
  3. Step 3: Cross multiply
    942.70x = 1,413.22 × 325.98
  4. Step 4: Simplify right side
    942.70x = 460,681.46
  5. Step 5: Solve for x
    x = 460,681.46/942.70
  6. Step 6: Final answer
    x = 488.68

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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.