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Finding the Fourth Proportional to 1,634, 2,253.80 and 1,185.08

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Solution

The fourth proportional to 1,634, 2,253.80 and 1,185.08 is: 1,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634 : 2,253.80 = 1,185.08 : x
  2. Step 2: Convert to fraction form
    1,634/2,253.80 = 1,185.08/x
  3. Step 3: Cross multiply
    1,634x = 2,253.80 × 1,185.08
  4. Step 4: Simplify right side
    1,634x = 2,670,933.30
  5. Step 5: Solve for x
    x = 2,670,933.30/1,634
  6. Step 6: Final answer
    x = 1,634.60

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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.