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Finding the Fourth Proportional to 503.89, 755.80 and 299.75

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Solution

The fourth proportional to 503.89, 755.80 and 299.75 is: 449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.89 : 755.80 = 299.75 : x
  2. Step 2: Convert to fraction form
    503.89/755.80 = 299.75/x
  3. Step 3: Cross multiply
    503.89x = 755.80 × 299.75
  4. Step 4: Simplify right side
    503.89x = 226,555.23
  5. Step 5: Solve for x
    x = 226,555.23/503.89
  6. Step 6: Final answer
    x = 449.61

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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.