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Finding the Fourth Proportional to 893.00, 1,231.08 and 656.54

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Solution

The fourth proportional to 893.00, 1,231.08 and 656.54 is: 905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.00 : 1,231.08 = 656.54 : x
  2. Step 2: Convert to fraction form
    893.00/1,231.08 = 656.54/x
  3. Step 3: Cross multiply
    893.00x = 1,231.08 × 656.54
  4. Step 4: Simplify right side
    893.00x = 808,243.83
  5. Step 5: Solve for x
    x = 808,243.83/893.00
  6. Step 6: Final answer
    x = 905.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.