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Finding the Fourth Proportional to 1,469.59, 2,027.88 and 840.26

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Solution

The fourth proportional to 1,469.59, 2,027.88 and 840.26 is: 1,159.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.59 : 2,027.88 = 840.26 : x
  2. Step 2: Convert to fraction form
    1,469.59/2,027.88 = 840.26/x
  3. Step 3: Cross multiply
    1,469.59x = 2,027.88 × 840.26
  4. Step 4: Simplify right side
    1,469.59x = 1,703,951.52
  5. Step 5: Solve for x
    x = 1,703,951.52/1,469.59
  6. Step 6: Final answer
    x = 1,159.48

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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.