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Finding the Fourth Proportional to 1,609.01, 2,219.63 and 1,018.52

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Solution

The fourth proportional to 1,609.01, 2,219.63 and 1,018.52 is: 1,405.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.01 : 2,219.63 = 1,018.52 : x
  2. Step 2: Convert to fraction form
    1,609.01/2,219.63 = 1,018.52/x
  3. Step 3: Cross multiply
    1,609.01x = 2,219.63 × 1,018.52
  4. Step 4: Simplify right side
    1,609.01x = 2,260,721.36
  5. Step 5: Solve for x
    x = 2,260,721.36/1,609.01
  6. Step 6: Final answer
    x = 1,405.04

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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.