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Finding the Fourth Proportional to 1,516.31, 2,092.62 and 853.32

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Solution

The fourth proportional to 1,516.31, 2,092.62 and 853.32 is: 1,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.31 : 2,092.62 = 853.32 : x
  2. Step 2: Convert to fraction form
    1,516.31/2,092.62 = 853.32/x
  3. Step 3: Cross multiply
    1,516.31x = 2,092.62 × 853.32
  4. Step 4: Simplify right side
    1,516.31x = 1,785,674.50
  5. Step 5: Solve for x
    x = 1,785,674.50/1,516.31
  6. Step 6: Final answer
    x = 1,177.65

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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.