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Finding the Fourth Proportional to 733.30, 1,011.91 and 401.71

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Solution

The fourth proportional to 733.30, 1,011.91 and 401.71 is: 554.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.30 : 1,011.91 = 401.71 : x
  2. Step 2: Convert to fraction form
    733.30/1,011.91 = 401.71/x
  3. Step 3: Cross multiply
    733.30x = 1,011.91 × 401.71
  4. Step 4: Simplify right side
    733.30x = 406,495.89
  5. Step 5: Solve for x
    x = 406,495.89/733.30
  6. Step 6: Final answer
    x = 554.34

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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.