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Finding the Fourth Proportional to 1,001.50, 1,501.87 and 481.36

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Solution

The fourth proportional to 1,001.50, 1,501.87 and 481.36 is: 721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.50 : 1,501.87 = 481.36 : x
  2. Step 2: Convert to fraction form
    1,001.50/1,501.87 = 481.36/x
  3. Step 3: Cross multiply
    1,001.50x = 1,501.87 × 481.36
  4. Step 4: Simplify right side
    1,001.50x = 722,930.23
  5. Step 5: Solve for x
    x = 722,930.23/1,001.50
  6. Step 6: Final answer
    x = 721.85

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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.