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Finding the Fourth Proportional to 535.51, 739 and 299.48

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Solution

The fourth proportional to 535.51, 739 and 299.48 is: 413.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.51 : 739 = 299.48 : x
  2. Step 2: Convert to fraction form
    535.51/739 = 299.48/x
  3. Step 3: Cross multiply
    535.51x = 739 × 299.48
  4. Step 4: Simplify right side
    535.51x = 221,315.72
  5. Step 5: Solve for x
    x = 221,315.72/535.51
  6. Step 6: Final answer
    x = 413.28

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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.