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Finding the Fourth Proportional to 1,300.98, 1,951.54 and 327.09

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Solution

The fourth proportional to 1,300.98, 1,951.54 and 327.09 is: 490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300.98 : 1,951.54 = 327.09 : x
  2. Step 2: Convert to fraction form
    1,300.98/1,951.54 = 327.09/x
  3. Step 3: Cross multiply
    1,300.98x = 1,951.54 × 327.09
  4. Step 4: Simplify right side
    1,300.98x = 638,329.22
  5. Step 5: Solve for x
    x = 638,329.22/1,300.98
  6. Step 6: Final answer
    x = 490.65

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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.