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Finding the Fourth Proportional to 535.59, 739.11 and 299.56

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Solution

The fourth proportional to 535.59, 739.11 and 299.56 is: 413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.59 : 739.11 = 299.56 : x
  2. Step 2: Convert to fraction form
    535.59/739.11 = 299.56/x
  3. Step 3: Cross multiply
    535.59x = 739.11 × 299.56
  4. Step 4: Simplify right side
    535.59x = 221,406.29
  5. Step 5: Solve for x
    x = 221,406.29/535.59
  6. Step 6: Final answer
    x = 413.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.