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Finding the Fourth Proportional to 1,073.32, 1,481.22 and 840.04

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Solution

The fourth proportional to 1,073.32, 1,481.22 and 840.04 is: 1,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073.32 : 1,481.22 = 840.04 : x
  2. Step 2: Convert to fraction form
    1,073.32/1,481.22 = 840.04/x
  3. Step 3: Cross multiply
    1,073.32x = 1,481.22 × 840.04
  4. Step 4: Simplify right side
    1,073.32x = 1,244,284.05
  5. Step 5: Solve for x
    x = 1,244,284.05/1,073.32
  6. Step 6: Final answer
    x = 1,159.29

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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.