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Finding the Fourth Proportional to 352.39, 488.74 and 348.28

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Solution

The fourth proportional to 352.39, 488.74 and 348.28 is: 483.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.39 : 488.74 = 348.28 : x
  2. Step 2: Convert to fraction form
    352.39/488.74 = 348.28/x
  3. Step 3: Cross multiply
    352.39x = 488.74 × 348.28
  4. Step 4: Simplify right side
    352.39x = 170,218.37
  5. Step 5: Solve for x
    x = 170,218.37/352.39
  6. Step 6: Final answer
    x = 483.04

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.