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Finding the Fourth Proportional to 881.88, 1,323.12 and 637.96

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Solution

The fourth proportional to 881.88, 1,323.12 and 637.96 is: 957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.88 : 1,323.12 = 637.96 : x
  2. Step 2: Convert to fraction form
    881.88/1,323.12 = 637.96/x
  3. Step 3: Cross multiply
    881.88x = 1,323.12 × 637.96
  4. Step 4: Simplify right side
    881.88x = 844,097.64
  5. Step 5: Solve for x
    x = 844,097.64/881.88
  6. Step 6: Final answer
    x = 957.16

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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.