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Finding the Fourth Proportional to 1,808.35, 2,712.94 and 575.76

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Solution

The fourth proportional to 1,808.35, 2,712.94 and 575.76 is: 863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.35 : 2,712.94 = 575.76 : x
  2. Step 2: Convert to fraction form
    1,808.35/2,712.94 = 575.76/x
  3. Step 3: Cross multiply
    1,808.35x = 2,712.94 × 575.76
  4. Step 4: Simplify right side
    1,808.35x = 1,561,999.05
  5. Step 5: Solve for x
    x = 1,561,999.05/1,808.35
  6. Step 6: Final answer
    x = 863.77

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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.