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Finding the Fourth Proportional to 1,262.35, 1,894.64 and 677.83

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Solution

The fourth proportional to 1,262.35, 1,894.64 and 677.83 is: 1,017.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.35 : 1,894.64 = 677.83 : x
  2. Step 2: Convert to fraction form
    1,262.35/1,894.64 = 677.83/x
  3. Step 3: Cross multiply
    1,262.35x = 1,894.64 × 677.83
  4. Step 4: Simplify right side
    1,262.35x = 1,284,243.83
  5. Step 5: Solve for x
    x = 1,284,243.83/1,262.35
  6. Step 6: Final answer
    x = 1,017.34

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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.