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Finding the Fourth Proportional to 1,243.93, 1,716.77 and 746.83

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Solution

The fourth proportional to 1,243.93, 1,716.77 and 746.83 is: 1,030.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.93 : 1,716.77 = 746.83 : x
  2. Step 2: Convert to fraction form
    1,243.93/1,716.77 = 746.83/x
  3. Step 3: Cross multiply
    1,243.93x = 1,716.77 × 746.83
  4. Step 4: Simplify right side
    1,243.93x = 1,282,135.34
  5. Step 5: Solve for x
    x = 1,282,135.34/1,243.93
  6. Step 6: Final answer
    x = 1,030.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.