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Finding the Fourth Proportional to 881.66, 1,322.69 and 265.41

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Solution

The fourth proportional to 881.66, 1,322.69 and 265.41 is: 398.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.66 : 1,322.69 = 265.41 : x
  2. Step 2: Convert to fraction form
    881.66/1,322.69 = 265.41/x
  3. Step 3: Cross multiply
    881.66x = 1,322.69 × 265.41
  4. Step 4: Simplify right side
    881.66x = 351,053.83
  5. Step 5: Solve for x
    x = 351,053.83/881.66
  6. Step 6: Final answer
    x = 398.17

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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.