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Finding the Fourth Proportional to 1,712.82, 2,568.06 and 542.43

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Solution

The fourth proportional to 1,712.82, 2,568.06 and 542.43 is: 813.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.82 : 2,568.06 = 542.43 : x
  2. Step 2: Convert to fraction form
    1,712.82/2,568.06 = 542.43/x
  3. Step 3: Cross multiply
    1,712.82x = 2,568.06 × 542.43
  4. Step 4: Simplify right side
    1,712.82x = 1,392,992.79
  5. Step 5: Solve for x
    x = 1,392,992.79/1,712.82
  6. Step 6: Final answer
    x = 813.27

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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.