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Finding the Fourth Proportional to 2,333.52, 3,499.72 and 689.64

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Solution

The fourth proportional to 2,333.52, 3,499.72 and 689.64 is: 1,034.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,333.52 : 3,499.72 = 689.64 : x
  2. Step 2: Convert to fraction form
    2,333.52/3,499.72 = 689.64/x
  3. Step 3: Cross multiply
    2,333.52x = 3,499.72 × 689.64
  4. Step 4: Simplify right side
    2,333.52x = 2,413,546.90
  5. Step 5: Solve for x
    x = 2,413,546.90/2,333.52
  6. Step 6: Final answer
    x = 1,034.29

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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.