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Finding the Fourth Proportional to 535.98, 739.58 and 299.90

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Solution

The fourth proportional to 535.98, 739.58 and 299.90 is: 413.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.98 : 739.58 = 299.90 : x
  2. Step 2: Convert to fraction form
    535.98/739.58 = 299.90/x
  3. Step 3: Cross multiply
    535.98x = 739.58 × 299.90
  4. Step 4: Simplify right side
    535.98x = 221,800.04
  5. Step 5: Solve for x
    x = 221,800.04/535.98
  6. Step 6: Final answer
    x = 413.82

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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.