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Finding the Fourth Proportional to 1,634.90, 2,452.29 and 697.88

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Solution

The fourth proportional to 1,634.90, 2,452.29 and 697.88 is: 1,046.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.90 : 2,452.29 = 697.88 : x
  2. Step 2: Convert to fraction form
    1,634.90/2,452.29 = 697.88/x
  3. Step 3: Cross multiply
    1,634.90x = 2,452.29 × 697.88
  4. Step 4: Simplify right side
    1,634.90x = 1,711,404.15
  5. Step 5: Solve for x
    x = 1,711,404.15/1,634.90
  6. Step 6: Final answer
    x = 1,046.79

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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.