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Finding the Fourth Proportional to 1,096.88, 1,645.26 and 316.89

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Solution

The fourth proportional to 1,096.88, 1,645.26 and 316.89 is: 475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,096.88 : 1,645.26 = 316.89 : x
  2. Step 2: Convert to fraction form
    1,096.88/1,645.26 = 316.89/x
  3. Step 3: Cross multiply
    1,096.88x = 1,645.26 × 316.89
  4. Step 4: Simplify right side
    1,096.88x = 521,366.44
  5. Step 5: Solve for x
    x = 521,366.44/1,096.88
  6. Step 6: Final answer
    x = 475.32

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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.