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Finding the Fourth Proportional to 911.93, 1,367.89 and 565.04

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Solution

The fourth proportional to 911.93, 1,367.89 and 565.04 is: 847.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.93 : 1,367.89 = 565.04 : x
  2. Step 2: Convert to fraction form
    911.93/1,367.89 = 565.04/x
  3. Step 3: Cross multiply
    911.93x = 1,367.89 × 565.04
  4. Step 4: Simplify right side
    911.93x = 772,914.57
  5. Step 5: Solve for x
    x = 772,914.57/911.93
  6. Step 6: Final answer
    x = 847.56

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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.