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Finding the Fourth Proportional to 442.82, 662.39 and 402.72

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Solution

The fourth proportional to 442.82, 662.39 and 402.72 is: 602.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.82 : 662.39 = 402.72 : x
  2. Step 2: Convert to fraction form
    442.82/662.39 = 402.72/x
  3. Step 3: Cross multiply
    442.82x = 662.39 × 402.72
  4. Step 4: Simplify right side
    442.82x = 266,757.70
  5. Step 5: Solve for x
    x = 266,757.70/442.82
  6. Step 6: Final answer
    x = 602.41

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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.