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Finding the Fourth Proportional to 1,908.31, 2,862.47 and 609.88

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Solution

The fourth proportional to 1,908.31, 2,862.47 and 609.88 is: 914.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.31 : 2,862.47 = 609.88 : x
  2. Step 2: Convert to fraction form
    1,908.31/2,862.47 = 609.88/x
  3. Step 3: Cross multiply
    1,908.31x = 2,862.47 × 609.88
  4. Step 4: Simplify right side
    1,908.31x = 1,745,763.20
  5. Step 5: Solve for x
    x = 1,745,763.20/1,908.31
  6. Step 6: Final answer
    x = 914.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.