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Finding the Fourth Proportional to 881.73, 1,214 and 671.23

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Solution

The fourth proportional to 881.73, 1,214 and 671.23 is: 924.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.73 : 1,214 = 671.23 : x
  2. Step 2: Convert to fraction form
    881.73/1,214 = 671.23/x
  3. Step 3: Cross multiply
    881.73x = 1,214 × 671.23
  4. Step 4: Simplify right side
    881.73x = 814,867.15
  5. Step 5: Solve for x
    x = 814,867.15/881.73
  6. Step 6: Final answer
    x = 924.17

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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.