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Finding the Fourth Proportional to 598.80, 892.80 and 578.42

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Solution

The fourth proportional to 598.80, 892.80 and 578.42 is: 862.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.80 : 892.80 = 578.42 : x
  2. Step 2: Convert to fraction form
    598.80/892.80 = 578.42/x
  3. Step 3: Cross multiply
    598.80x = 892.80 × 578.42
  4. Step 4: Simplify right side
    598.80x = 516,413.38
  5. Step 5: Solve for x
    x = 516,413.38/598.80
  6. Step 6: Final answer
    x = 862.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.