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Finding the Fourth Proportional to 442.60, 662.82 and 260.04

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Solution

The fourth proportional to 442.60, 662.82 and 260.04 is: 389.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.60 : 662.82 = 260.04 : x
  2. Step 2: Convert to fraction form
    442.60/662.82 = 260.04/x
  3. Step 3: Cross multiply
    442.60x = 662.82 × 260.04
  4. Step 4: Simplify right side
    442.60x = 172,361.22
  5. Step 5: Solve for x
    x = 172,361.22/442.60
  6. Step 6: Final answer
    x = 389.43

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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.