Home / 1,112.79-1,669.23-496.38

Finding the Fourth Proportional to 1,112.79, 1,669.23 and 496.38

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Solution

The fourth proportional to 1,112.79, 1,669.23 and 496.38 is: 744.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.79 : 1,669.23 = 496.38 : x
  2. Step 2: Convert to fraction form
    1,112.79/1,669.23 = 496.38/x
  3. Step 3: Cross multiply
    1,112.79x = 1,669.23 × 496.38
  4. Step 4: Simplify right side
    1,112.79x = 828,572.39
  5. Step 5: Solve for x
    x = 828,572.39/1,112.79
  6. Step 6: Final answer
    x = 744.59

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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.