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Finding the Fourth Proportional to 376.92, 522.72 and 353.16

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Solution

The fourth proportional to 376.92, 522.72 and 353.16 is: 489.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.92 : 522.72 = 353.16 : x
  2. Step 2: Convert to fraction form
    376.92/522.72 = 353.16/x
  3. Step 3: Cross multiply
    376.92x = 522.72 × 353.16
  4. Step 4: Simplify right side
    376.92x = 184,603.80
  5. Step 5: Solve for x
    x = 184,603.80/376.92
  6. Step 6: Final answer
    x = 489.77

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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.