Home / 1,112.44-1,669.79-557.54

Finding the Fourth Proportional to 1,112.44, 1,669.79 and 557.54

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Solution

The fourth proportional to 1,112.44, 1,669.79 and 557.54 is: 836.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.44 : 1,669.79 = 557.54 : x
  2. Step 2: Convert to fraction form
    1,112.44/1,669.79 = 557.54/x
  3. Step 3: Cross multiply
    1,112.44x = 1,669.79 × 557.54
  4. Step 4: Simplify right side
    1,112.44x = 930,979.23
  5. Step 5: Solve for x
    x = 930,979.23/1,112.44
  6. Step 6: Final answer
    x = 836.88

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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.