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Finding the Fourth Proportional to 1,808.05, 2,712.45 and 575.30

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Solution

The fourth proportional to 1,808.05, 2,712.45 and 575.30 is: 863.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.05 : 2,712.45 = 575.30 : x
  2. Step 2: Convert to fraction form
    1,808.05/2,712.45 = 575.30/x
  3. Step 3: Cross multiply
    1,808.05x = 2,712.45 × 575.30
  4. Step 4: Simplify right side
    1,808.05x = 1,560,472.49
  5. Step 5: Solve for x
    x = 1,560,472.49/1,808.05
  6. Step 6: Final answer
    x = 863.07

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.