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Finding the Fourth Proportional to 1,008.84, 1,512.26 and 480.82

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Solution

The fourth proportional to 1,008.84, 1,512.26 and 480.82 is: 720.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.84 : 1,512.26 = 480.82 : x
  2. Step 2: Convert to fraction form
    1,008.84/1,512.26 = 480.82/x
  3. Step 3: Cross multiply
    1,008.84x = 1,512.26 × 480.82
  4. Step 4: Simplify right side
    1,008.84x = 727,124.85
  5. Step 5: Solve for x
    x = 727,124.85/1,008.84
  6. Step 6: Final answer
    x = 720.75

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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.