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Finding the Fourth Proportional to 1,634.56, 2,451.09 and 538.60

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Solution

The fourth proportional to 1,634.56, 2,451.09 and 538.60 is: 807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.56 : 2,451.09 = 538.60 : x
  2. Step 2: Convert to fraction form
    1,634.56/2,451.09 = 538.60/x
  3. Step 3: Cross multiply
    1,634.56x = 2,451.09 × 538.60
  4. Step 4: Simplify right side
    1,634.56x = 1,320,157.07
  5. Step 5: Solve for x
    x = 1,320,157.07/1,634.56
  6. Step 6: Final answer
    x = 807.65

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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.