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Finding the Fourth Proportional to 507.97, 762.04 and 215.47

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Solution

The fourth proportional to 507.97, 762.04 and 215.47 is: 323.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.97 : 762.04 = 215.47 : x
  2. Step 2: Convert to fraction form
    507.97/762.04 = 215.47/x
  3. Step 3: Cross multiply
    507.97x = 762.04 × 215.47
  4. Step 4: Simplify right side
    507.97x = 164,195.68
  5. Step 5: Solve for x
    x = 164,195.68/507.97
  6. Step 6: Final answer
    x = 323.24

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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.