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Finding the Fourth Proportional to 878.19, 1,317.33 and 733.65

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Solution

The fourth proportional to 878.19, 1,317.33 and 733.65 is: 1,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    878.19 : 1,317.33 = 733.65 : x
  2. Step 2: Convert to fraction form
    878.19/1,317.33 = 733.65/x
  3. Step 3: Cross multiply
    878.19x = 1,317.33 × 733.65
  4. Step 4: Simplify right side
    878.19x = 966,459.15
  5. Step 5: Solve for x
    x = 966,459.15/878.19
  6. Step 6: Final answer
    x = 1,100.51

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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.