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Finding the Fourth Proportional to 1,241.75, 1,859.56 and 657.29

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Solution

The fourth proportional to 1,241.75, 1,859.56 and 657.29 is: 984.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.75 : 1,859.56 = 657.29 : x
  2. Step 2: Convert to fraction form
    1,241.75/1,859.56 = 657.29/x
  3. Step 3: Cross multiply
    1,241.75x = 1,859.56 × 657.29
  4. Step 4: Simplify right side
    1,241.75x = 1,222,270.19
  5. Step 5: Solve for x
    x = 1,222,270.19/1,241.75
  6. Step 6: Final answer
    x = 984.31

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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.