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Finding the Fourth Proportional to 1,098.56, 1,516.32 and 656.54

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Solution

The fourth proportional to 1,098.56, 1,516.32 and 656.54 is: 906.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.56 : 1,516.32 = 656.54 : x
  2. Step 2: Convert to fraction form
    1,098.56/1,516.32 = 656.54/x
  3. Step 3: Cross multiply
    1,098.56x = 1,516.32 × 656.54
  4. Step 4: Simplify right side
    1,098.56x = 995,524.73
  5. Step 5: Solve for x
    x = 995,524.73/1,098.56
  6. Step 6: Final answer
    x = 906.21

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Why These Related Problems?

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