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Finding the Fourth Proportional to 1,008.97, 1,513.32 and 350.58

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Solution

The fourth proportional to 1,008.97, 1,513.32 and 350.58 is: 525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.97 : 1,513.32 = 350.58 : x
  2. Step 2: Convert to fraction form
    1,008.97/1,513.32 = 350.58/x
  3. Step 3: Cross multiply
    1,008.97x = 1,513.32 × 350.58
  4. Step 4: Simplify right side
    1,008.97x = 530,539.73
  5. Step 5: Solve for x
    x = 530,539.73/1,008.97
  6. Step 6: Final answer
    x = 525.82

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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.