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Finding the Fourth Proportional to 442.60, 662.55 and 442.60

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Solution

The fourth proportional to 442.60, 662.55 and 442.60 is: 662.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.60 : 662.55 = 442.60 : x
  2. Step 2: Convert to fraction form
    442.60/662.55 = 442.60/x
  3. Step 3: Cross multiply
    442.60x = 662.55 × 442.60
  4. Step 4: Simplify right side
    442.60x = 293,244.63
  5. Step 5: Solve for x
    x = 293,244.63/442.60
  6. Step 6: Final answer
    x = 662.55

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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.