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Finding the Fourth Proportional to 883.31, 1,325.36 and 396.09

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Solution

The fourth proportional to 883.31, 1,325.36 and 396.09 is: 594.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.31 : 1,325.36 = 396.09 : x
  2. Step 2: Convert to fraction form
    883.31/1,325.36 = 396.09/x
  3. Step 3: Cross multiply
    883.31x = 1,325.36 × 396.09
  4. Step 4: Simplify right side
    883.31x = 524,962.83
  5. Step 5: Solve for x
    x = 524,962.83/883.31
  6. Step 6: Final answer
    x = 594.32

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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.