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Finding the Fourth Proportional to 1,605.54, 2,214.60 and 984.54

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Solution

The fourth proportional to 1,605.54, 2,214.60 and 984.54 is: 1,358.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.54 : 2,214.60 = 984.54 : x
  2. Step 2: Convert to fraction form
    1,605.54/2,214.60 = 984.54/x
  3. Step 3: Cross multiply
    1,605.54x = 2,214.60 × 984.54
  4. Step 4: Simplify right side
    1,605.54x = 2,180,362.28
  5. Step 5: Solve for x
    x = 2,180,362.28/1,605.54
  6. Step 6: Final answer
    x = 1,358.02

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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.