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Finding the Fourth Proportional to 1,037.07, 1,543.39 and 998.19

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Solution

The fourth proportional to 1,037.07, 1,543.39 and 998.19 is: 1,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.07 : 1,543.39 = 998.19 : x
  2. Step 2: Convert to fraction form
    1,037.07/1,543.39 = 998.19/x
  3. Step 3: Cross multiply
    1,037.07x = 1,543.39 × 998.19
  4. Step 4: Simplify right side
    1,037.07x = 1,540,593.97
  5. Step 5: Solve for x
    x = 1,540,593.97/1,037.07
  6. Step 6: Final answer
    x = 1,485.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.