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Finding the Fourth Proportional to 881.73, 1,216.47 and 508.80

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Solution

The fourth proportional to 881.73, 1,216.47 and 508.80 is: 701.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.73 : 1,216.47 = 508.80 : x
  2. Step 2: Convert to fraction form
    881.73/1,216.47 = 508.80/x
  3. Step 3: Cross multiply
    881.73x = 1,216.47 × 508.80
  4. Step 4: Simplify right side
    881.73x = 618,946.41
  5. Step 5: Solve for x
    x = 618,946.41/881.73
  6. Step 6: Final answer
    x = 701.97

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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.