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Finding the Fourth Proportional to 501.39, 748.44 and 487.62

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Solution

The fourth proportional to 501.39, 748.44 and 487.62 is: 727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.39 : 748.44 = 487.62 : x
  2. Step 2: Convert to fraction form
    501.39/748.44 = 487.62/x
  3. Step 3: Cross multiply
    501.39x = 748.44 × 487.62
  4. Step 4: Simplify right side
    501.39x = 364,954.31
  5. Step 5: Solve for x
    x = 364,954.31/501.39
  6. Step 6: Final answer
    x = 727.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.