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Finding the Fourth Proportional to 1,008.97, 1,513.59 and 488.54

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Solution

The fourth proportional to 1,008.97, 1,513.59 and 488.54 is: 732.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.97 : 1,513.59 = 488.54 : x
  2. Step 2: Convert to fraction form
    1,008.97/1,513.59 = 488.54/x
  3. Step 3: Cross multiply
    1,008.97x = 1,513.59 × 488.54
  4. Step 4: Simplify right side
    1,008.97x = 739,451.09
  5. Step 5: Solve for x
    x = 739,451.09/1,008.97
  6. Step 6: Final answer
    x = 732.88

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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.