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Finding the Fourth Proportional to 943.65, 1,302.18 and 523.97

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Solution

The fourth proportional to 943.65, 1,302.18 and 523.97 is: 723.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.65 : 1,302.18 = 523.97 : x
  2. Step 2: Convert to fraction form
    943.65/1,302.18 = 523.97/x
  3. Step 3: Cross multiply
    943.65x = 1,302.18 × 523.97
  4. Step 4: Simplify right side
    943.65x = 682,299.66
  5. Step 5: Solve for x
    x = 682,299.66/943.65
  6. Step 6: Final answer
    x = 723.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.