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Finding the Fourth Proportional to 1,008.73, 1,512.18 and 700.73

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Solution

The fourth proportional to 1,008.73, 1,512.18 and 700.73 is: 1,050.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.73 : 1,512.18 = 700.73 : x
  2. Step 2: Convert to fraction form
    1,008.73/1,512.18 = 700.73/x
  3. Step 3: Cross multiply
    1,008.73x = 1,512.18 × 700.73
  4. Step 4: Simplify right side
    1,008.73x = 1,059,622.33
  5. Step 5: Solve for x
    x = 1,059,622.33/1,008.73
  6. Step 6: Final answer
    x = 1,050.45

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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.