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Finding the Fourth Proportional to 893.93, 1,340.89 and 483.26

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Solution

The fourth proportional to 893.93, 1,340.89 and 483.26 is: 724.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.93 : 1,340.89 = 483.26 : x
  2. Step 2: Convert to fraction form
    893.93/1,340.89 = 483.26/x
  3. Step 3: Cross multiply
    893.93x = 1,340.89 × 483.26
  4. Step 4: Simplify right side
    893.93x = 647,990.59
  5. Step 5: Solve for x
    x = 647,990.59/893.93
  6. Step 6: Final answer
    x = 724.88

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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.