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Finding the Fourth Proportional to 942.58, 1,413.60 and 572.50

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Solution

The fourth proportional to 942.58, 1,413.60 and 572.50 is: 858.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.58 : 1,413.60 = 572.50 : x
  2. Step 2: Convert to fraction form
    942.58/1,413.60 = 572.50/x
  3. Step 3: Cross multiply
    942.58x = 1,413.60 × 572.50
  4. Step 4: Simplify right side
    942.58x = 809,286
  5. Step 5: Solve for x
    x = 809,286/942.58
  6. Step 6: Final answer
    x = 858.59

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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.