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Finding the Fourth Proportional to 1,096.80, 1,645.17 and 447.51

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Solution

The fourth proportional to 1,096.80, 1,645.17 and 447.51 is: 671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,096.80 : 1,645.17 = 447.51 : x
  2. Step 2: Convert to fraction form
    1,096.80/1,645.17 = 447.51/x
  3. Step 3: Cross multiply
    1,096.80x = 1,645.17 × 447.51
  4. Step 4: Simplify right side
    1,096.80x = 736,230.03
  5. Step 5: Solve for x
    x = 736,230.03/1,096.80
  6. Step 6: Final answer
    x = 671.25

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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.