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Finding the Fourth Proportional to 1,471.29, 2,029.54 and 881.49

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Solution

The fourth proportional to 1,471.29, 2,029.54 and 881.49 is: 1,215.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.29 : 2,029.54 = 881.49 : x
  2. Step 2: Convert to fraction form
    1,471.29/2,029.54 = 881.49/x
  3. Step 3: Cross multiply
    1,471.29x = 2,029.54 × 881.49
  4. Step 4: Simplify right side
    1,471.29x = 1,789,008.29
  5. Step 5: Solve for x
    x = 1,789,008.29/1,471.29
  6. Step 6: Final answer
    x = 1,215.94

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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.