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Finding the Fourth Proportional to 1,098.91, 1,516.62 and 633.16

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Solution

The fourth proportional to 1,098.91, 1,516.62 and 633.16 is: 873.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.91 : 1,516.62 = 633.16 : x
  2. Step 2: Convert to fraction form
    1,098.91/1,516.62 = 633.16/x
  3. Step 3: Cross multiply
    1,098.91x = 1,516.62 × 633.16
  4. Step 4: Simplify right side
    1,098.91x = 960,263.12
  5. Step 5: Solve for x
    x = 960,263.12/1,098.91
  6. Step 6: Final answer
    x = 873.83

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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.