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Finding the Fourth Proportional to 882.73, 1,217.92 and 551.21

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Solution

The fourth proportional to 882.73, 1,217.92 and 551.21 is: 760.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.73 : 1,217.92 = 551.21 : x
  2. Step 2: Convert to fraction form
    882.73/1,217.92 = 551.21/x
  3. Step 3: Cross multiply
    882.73x = 1,217.92 × 551.21
  4. Step 4: Simplify right side
    882.73x = 671,323.59
  5. Step 5: Solve for x
    x = 671,323.59/882.73
  6. Step 6: Final answer
    x = 760.51

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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.