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Finding the Fourth Proportional to 733.50, 1,100.75 and 300.65

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Solution

The fourth proportional to 733.50, 1,100.75 and 300.65 is: 451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.50 : 1,100.75 = 300.65 : x
  2. Step 2: Convert to fraction form
    733.50/1,100.75 = 300.65/x
  3. Step 3: Cross multiply
    733.50x = 1,100.75 × 300.65
  4. Step 4: Simplify right side
    733.50x = 330,933.48
  5. Step 5: Solve for x
    x = 330,933.48/733.50
  6. Step 6: Final answer
    x = 451.17

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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.