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Finding the Fourth Proportional to 353.41, 489.82 and 346.93

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Solution

The fourth proportional to 353.41, 489.82 and 346.93 is: 480.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.41 : 489.82 = 346.93 : x
  2. Step 2: Convert to fraction form
    353.41/489.82 = 346.93/x
  3. Step 3: Cross multiply
    353.41x = 489.82 × 346.93
  4. Step 4: Simplify right side
    353.41x = 169,933.25
  5. Step 5: Solve for x
    x = 169,933.25/353.41
  6. Step 6: Final answer
    x = 480.84

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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.