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Finding the Fourth Proportional to 881.66, 1,322.46 and 265.39

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Solution

The fourth proportional to 881.66, 1,322.46 and 265.39 is: 398.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.66 : 1,322.46 = 265.39 : x
  2. Step 2: Convert to fraction form
    881.66/1,322.46 = 265.39/x
  3. Step 3: Cross multiply
    881.66x = 1,322.46 × 265.39
  4. Step 4: Simplify right side
    881.66x = 350,964.35
  5. Step 5: Solve for x
    x = 350,964.35/881.66
  6. Step 6: Final answer
    x = 398.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.