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Finding the Fourth Proportional to 1,631.63, 2,445.99 and 798.25

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Solution

The fourth proportional to 1,631.63, 2,445.99 and 798.25 is: 1,196.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.63 : 2,445.99 = 798.25 : x
  2. Step 2: Convert to fraction form
    1,631.63/2,445.99 = 798.25/x
  3. Step 3: Cross multiply
    1,631.63x = 2,445.99 × 798.25
  4. Step 4: Simplify right side
    1,631.63x = 1,952,511.52
  5. Step 5: Solve for x
    x = 1,952,511.52/1,631.63
  6. Step 6: Final answer
    x = 1,196.66

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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.