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Finding the Fourth Proportional to 910.33, 1,365.82 and 448.65

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Solution

The fourth proportional to 910.33, 1,365.82 and 448.65 is: 673.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.33 : 1,365.82 = 448.65 : x
  2. Step 2: Convert to fraction form
    910.33/1,365.82 = 448.65/x
  3. Step 3: Cross multiply
    910.33x = 1,365.82 × 448.65
  4. Step 4: Simplify right side
    910.33x = 612,772.90
  5. Step 5: Solve for x
    x = 612,772.90/910.33
  6. Step 6: Final answer
    x = 673.13

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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.