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Finding the Fourth Proportional to 893.83, 1,338.76 and 580.37

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Solution

The fourth proportional to 893.83, 1,338.76 and 580.37 is: 869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.83 : 1,338.76 = 580.37 : x
  2. Step 2: Convert to fraction form
    893.83/1,338.76 = 580.37/x
  3. Step 3: Cross multiply
    893.83x = 1,338.76 × 580.37
  4. Step 4: Simplify right side
    893.83x = 776,978.04
  5. Step 5: Solve for x
    x = 776,978.04/893.83
  6. Step 6: Final answer
    x = 869.27

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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.