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Finding the Fourth Proportional to 1,205.01, 1,662.94 and 673.87

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Solution

The fourth proportional to 1,205.01, 1,662.94 and 673.87 is: 929.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.01 : 1,662.94 = 673.87 : x
  2. Step 2: Convert to fraction form
    1,205.01/1,662.94 = 673.87/x
  3. Step 3: Cross multiply
    1,205.01x = 1,662.94 × 673.87
  4. Step 4: Simplify right side
    1,205.01x = 1,120,602.01
  5. Step 5: Solve for x
    x = 1,120,602.01/1,205.01
  6. Step 6: Final answer
    x = 929.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.