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Finding the Fourth Proportional to 893.91, 1,341.27 and 564.78

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Solution

The fourth proportional to 893.91, 1,341.27 and 564.78 is: 847.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.91 : 1,341.27 = 564.78 : x
  2. Step 2: Convert to fraction form
    893.91/1,341.27 = 564.78/x
  3. Step 3: Cross multiply
    893.91x = 1,341.27 × 564.78
  4. Step 4: Simplify right side
    893.91x = 757,522.47
  5. Step 5: Solve for x
    x = 757,522.47/893.91
  6. Step 6: Final answer
    x = 847.43

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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.