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Finding the Fourth Proportional to 503.92, 756.49 and 299.80

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Solution

The fourth proportional to 503.92, 756.49 and 299.80 is: 450.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.92 : 756.49 = 299.80 : x
  2. Step 2: Convert to fraction form
    503.92/756.49 = 299.80/x
  3. Step 3: Cross multiply
    503.92x = 756.49 × 299.80
  4. Step 4: Simplify right side
    503.92x = 226,795.70
  5. Step 5: Solve for x
    x = 226,795.70/503.92
  6. Step 6: Final answer
    x = 450.06

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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.