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Finding the Fourth Proportional to 733.27, 1,011.91 and 401.72

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Solution

The fourth proportional to 733.27, 1,011.91 and 401.72 is: 554.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.27 : 1,011.91 = 401.72 : x
  2. Step 2: Convert to fraction form
    733.27/1,011.91 = 401.72/x
  3. Step 3: Cross multiply
    733.27x = 1,011.91 × 401.72
  4. Step 4: Simplify right side
    733.27x = 406,497.42
  5. Step 5: Solve for x
    x = 406,497.42/733.27
  6. Step 6: Final answer
    x = 554.37

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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.