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Finding the Fourth Proportional to 881.88, 1,321.06 and 534.99

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Solution

The fourth proportional to 881.88, 1,321.06 and 534.99 is: 801.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.88 : 1,321.06 = 534.99 : x
  2. Step 2: Convert to fraction form
    881.88/1,321.06 = 534.99/x
  3. Step 3: Cross multiply
    881.88x = 1,321.06 × 534.99
  4. Step 4: Simplify right side
    881.88x = 706,753.89
  5. Step 5: Solve for x
    x = 706,753.89/881.88
  6. Step 6: Final answer
    x = 801.42

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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.