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Finding the Fourth Proportional to 418.27, 627.69 and 174.80

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Solution

The fourth proportional to 418.27, 627.69 and 174.80 is: 262.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.27 : 627.69 = 174.80 : x
  2. Step 2: Convert to fraction form
    418.27/627.69 = 174.80/x
  3. Step 3: Cross multiply
    418.27x = 627.69 × 174.80
  4. Step 4: Simplify right side
    418.27x = 109,720.21
  5. Step 5: Solve for x
    x = 109,720.21/418.27
  6. Step 6: Final answer
    x = 262.32

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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.