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Finding the Fourth Proportional to 441.60, 662.72 and 384

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Solution

The fourth proportional to 441.60, 662.72 and 384 is: 576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.60 : 662.72 = 384 : x
  2. Step 2: Convert to fraction form
    441.60/662.72 = 384/x
  3. Step 3: Cross multiply
    441.60x = 662.72 × 384
  4. Step 4: Simplify right side
    441.60x = 254,484.48
  5. Step 5: Solve for x
    x = 254,484.48/441.60
  6. Step 6: Final answer
    x = 576.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.