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Finding the Fourth Proportional to 1,104.78, 1,524.34 and 872.58

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Solution

The fourth proportional to 1,104.78, 1,524.34 and 872.58 is: 1,203.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.78 : 1,524.34 = 872.58 : x
  2. Step 2: Convert to fraction form
    1,104.78/1,524.34 = 872.58/x
  3. Step 3: Cross multiply
    1,104.78x = 1,524.34 × 872.58
  4. Step 4: Simplify right side
    1,104.78x = 1,330,108.60
  5. Step 5: Solve for x
    x = 1,330,108.60/1,104.78
  6. Step 6: Final answer
    x = 1,203.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.