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Finding the Fourth Proportional to 2,205.73, 3,308.61 and 973.15

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Solution

The fourth proportional to 2,205.73, 3,308.61 and 973.15 is: 1,459.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.73 : 3,308.61 = 973.15 : x
  2. Step 2: Convert to fraction form
    2,205.73/3,308.61 = 973.15/x
  3. Step 3: Cross multiply
    2,205.73x = 3,308.61 × 973.15
  4. Step 4: Simplify right side
    2,205.73x = 3,219,773.82
  5. Step 5: Solve for x
    x = 3,219,773.82/2,205.73
  6. Step 6: Final answer
    x = 1,459.73

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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.