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Finding the Fourth Proportional to 1,678.44, 2,517.64 and 704.52

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Solution

The fourth proportional to 1,678.44, 2,517.64 and 704.52 is: 1,056.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.44 : 2,517.64 = 704.52 : x
  2. Step 2: Convert to fraction form
    1,678.44/2,517.64 = 704.52/x
  3. Step 3: Cross multiply
    1,678.44x = 2,517.64 × 704.52
  4. Step 4: Simplify right side
    1,678.44x = 1,773,727.73
  5. Step 5: Solve for x
    x = 1,773,727.73/1,678.44
  6. Step 6: Final answer
    x = 1,056.77

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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.