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Finding the Fourth Proportional to 535.54, 739 and 395.74

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Solution

The fourth proportional to 535.54, 739 and 395.74 is: 546.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.54 : 739 = 395.74 : x
  2. Step 2: Convert to fraction form
    535.54/739 = 395.74/x
  3. Step 3: Cross multiply
    535.54x = 739 × 395.74
  4. Step 4: Simplify right side
    535.54x = 292,451.86
  5. Step 5: Solve for x
    x = 292,451.86/535.54
  6. Step 6: Final answer
    x = 546.09

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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.