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Finding the Fourth Proportional to 352.42, 489.69 and 348.62

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Solution

The fourth proportional to 352.42, 489.69 and 348.62 is: 484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.42 : 489.69 = 348.62 : x
  2. Step 2: Convert to fraction form
    352.42/489.69 = 348.62/x
  3. Step 3: Cross multiply
    352.42x = 489.69 × 348.62
  4. Step 4: Simplify right side
    352.42x = 170,713.28
  5. Step 5: Solve for x
    x = 170,713.28/352.42
  6. Step 6: Final answer
    x = 484.41

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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.