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Finding the Fourth Proportional to 881.55, 1,216.52 and 508.48

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Solution

The fourth proportional to 881.55, 1,216.52 and 508.48 is: 701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.55 : 1,216.52 = 508.48 : x
  2. Step 2: Convert to fraction form
    881.55/1,216.52 = 508.48/x
  3. Step 3: Cross multiply
    881.55x = 1,216.52 × 508.48
  4. Step 4: Simplify right side
    881.55x = 618,572.41
  5. Step 5: Solve for x
    x = 618,572.41/881.55
  6. Step 6: Final answer
    x = 701.69

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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.