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Finding the Fourth Proportional to 1,076.81, 1,476.32 and 1,057.37

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Solution

The fourth proportional to 1,076.81, 1,476.32 and 1,057.37 is: 1,449.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.81 : 1,476.32 = 1,057.37 : x
  2. Step 2: Convert to fraction form
    1,076.81/1,476.32 = 1,057.37/x
  3. Step 3: Cross multiply
    1,076.81x = 1,476.32 × 1,057.37
  4. Step 4: Simplify right side
    1,076.81x = 1,561,011.19
  5. Step 5: Solve for x
    x = 1,561,011.19/1,076.81
  6. Step 6: Final answer
    x = 1,449.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.