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Finding the Fourth Proportional to 348.39, 519.39 and 327.72

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Solution

The fourth proportional to 348.39, 519.39 and 327.72 is: 488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.39 : 519.39 = 327.72 : x
  2. Step 2: Convert to fraction form
    348.39/519.39 = 327.72/x
  3. Step 3: Cross multiply
    348.39x = 519.39 × 327.72
  4. Step 4: Simplify right side
    348.39x = 170,214.49
  5. Step 5: Solve for x
    x = 170,214.49/348.39
  6. Step 6: Final answer
    x = 488.57

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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.