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Finding the Fourth Proportional to 1,216.50, 1,825.97 and 888.45

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Solution

The fourth proportional to 1,216.50, 1,825.97 and 888.45 is: 1,333.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.50 : 1,825.97 = 888.45 : x
  2. Step 2: Convert to fraction form
    1,216.50/1,825.97 = 888.45/x
  3. Step 3: Cross multiply
    1,216.50x = 1,825.97 × 888.45
  4. Step 4: Simplify right side
    1,216.50x = 1,622,278.60
  5. Step 5: Solve for x
    x = 1,622,278.60/1,216.50
  6. Step 6: Final answer
    x = 1,333.56

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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.