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Finding the Fourth Proportional to 881.36, 1,216.29 and 508.27

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Solution

The fourth proportional to 881.36, 1,216.29 and 508.27 is: 701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.36 : 1,216.29 = 508.27 : x
  2. Step 2: Convert to fraction form
    881.36/1,216.29 = 508.27/x
  3. Step 3: Cross multiply
    881.36x = 1,216.29 × 508.27
  4. Step 4: Simplify right side
    881.36x = 618,201.18
  5. Step 5: Solve for x
    x = 618,201.18/881.36
  6. Step 6: Final answer
    x = 701.42

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1.5x scale

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.