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Finding the Fourth Proportional to 808.26, 1,114.66 and 683.79

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Solution

The fourth proportional to 808.26, 1,114.66 and 683.79 is: 943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.26 : 1,114.66 = 683.79 : x
  2. Step 2: Convert to fraction form
    808.26/1,114.66 = 683.79/x
  3. Step 3: Cross multiply
    808.26x = 1,114.66 × 683.79
  4. Step 4: Simplify right side
    808.26x = 762,193.36
  5. Step 5: Solve for x
    x = 762,193.36/808.26
  6. Step 6: Final answer
    x = 943.01

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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.