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Finding the Fourth Proportional to 488.25, 731.73 and 414.90

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Solution

The fourth proportional to 488.25, 731.73 and 414.90 is: 621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.25 : 731.73 = 414.90 : x
  2. Step 2: Convert to fraction form
    488.25/731.73 = 414.90/x
  3. Step 3: Cross multiply
    488.25x = 731.73 × 414.90
  4. Step 4: Simplify right side
    488.25x = 303,594.78
  5. Step 5: Solve for x
    x = 303,594.78/488.25
  6. Step 6: Final answer
    x = 621.80

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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.