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Finding the Fourth Proportional to 1,633.78, 2,254.65 and 935.14

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Solution

The fourth proportional to 1,633.78, 2,254.65 and 935.14 is: 1,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,633.78 : 2,254.65 = 935.14 : x
  2. Step 2: Convert to fraction form
    1,633.78/2,254.65 = 935.14/x
  3. Step 3: Cross multiply
    1,633.78x = 2,254.65 × 935.14
  4. Step 4: Simplify right side
    1,633.78x = 2,108,413.40
  5. Step 5: Solve for x
    x = 2,108,413.40/1,633.78
  6. Step 6: Final answer
    x = 1,290.51

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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.