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Finding the Fourth Proportional to 1,634.50, 2,449.45 and 709.35

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Solution

The fourth proportional to 1,634.50, 2,449.45 and 709.35 is: 1,063.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.50 : 2,449.45 = 709.35 : x
  2. Step 2: Convert to fraction form
    1,634.50/2,449.45 = 709.35/x
  3. Step 3: Cross multiply
    1,634.50x = 2,449.45 × 709.35
  4. Step 4: Simplify right side
    1,634.50x = 1,737,517.36
  5. Step 5: Solve for x
    x = 1,737,517.36/1,634.50
  6. Step 6: Final answer
    x = 1,063.03

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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.