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Finding the Fourth Proportional to 881.90, 1,323.27 and 491.88

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Solution

The fourth proportional to 881.90, 1,323.27 and 491.88 is: 738.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.90 : 1,323.27 = 491.88 : x
  2. Step 2: Convert to fraction form
    881.90/1,323.27 = 491.88/x
  3. Step 3: Cross multiply
    881.90x = 1,323.27 × 491.88
  4. Step 4: Simplify right side
    881.90x = 650,890.05
  5. Step 5: Solve for x
    x = 650,890.05/881.90
  6. Step 6: Final answer
    x = 738.06

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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.