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Finding the Fourth Proportional to 609.80, 914.56 and 301.55

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Solution

The fourth proportional to 609.80, 914.56 and 301.55 is: 452.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.80 : 914.56 = 301.55 : x
  2. Step 2: Convert to fraction form
    609.80/914.56 = 301.55/x
  3. Step 3: Cross multiply
    609.80x = 914.56 × 301.55
  4. Step 4: Simplify right side
    609.80x = 275,780.24
  5. Step 5: Solve for x
    x = 275,780.24/609.80
  6. Step 6: Final answer
    x = 452.25

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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.