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Finding the Fourth Proportional to 1,660.24, 2,488.86 and 634.96

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Solution

The fourth proportional to 1,660.24, 2,488.86 and 634.96 is: 951.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.24 : 2,488.86 = 634.96 : x
  2. Step 2: Convert to fraction form
    1,660.24/2,488.86 = 634.96/x
  3. Step 3: Cross multiply
    1,660.24x = 2,488.86 × 634.96
  4. Step 4: Simplify right side
    1,660.24x = 1,580,326.55
  5. Step 5: Solve for x
    x = 1,580,326.55/1,660.24
  6. Step 6: Final answer
    x = 951.87

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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.