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Finding the Fourth Proportional to 1,418.43, 2,127.96 and 552.75

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Solution

The fourth proportional to 1,418.43, 2,127.96 and 552.75 is: 829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.43 : 2,127.96 = 552.75 : x
  2. Step 2: Convert to fraction form
    1,418.43/2,127.96 = 552.75/x
  3. Step 3: Cross multiply
    1,418.43x = 2,127.96 × 552.75
  4. Step 4: Simplify right side
    1,418.43x = 1,176,229.89
  5. Step 5: Solve for x
    x = 1,176,229.89/1,418.43
  6. Step 6: Final answer
    x = 829.25

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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.