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Finding the Fourth Proportional to 1,326.62, 1,829.09 and 883.55

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Solution

The fourth proportional to 1,326.62, 1,829.09 and 883.55 is: 1,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.62 : 1,829.09 = 883.55 : x
  2. Step 2: Convert to fraction form
    1,326.62/1,829.09 = 883.55/x
  3. Step 3: Cross multiply
    1,326.62x = 1,829.09 × 883.55
  4. Step 4: Simplify right side
    1,326.62x = 1,616,078.91
  5. Step 5: Solve for x
    x = 1,616,078.91/1,326.62
  6. Step 6: Final answer
    x = 1,218.20

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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.