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Finding the Fourth Proportional to 389.73, 585.51 and 335.06

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Solution

The fourth proportional to 389.73, 585.51 and 335.06 is: 503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.73 : 585.51 = 335.06 : x
  2. Step 2: Convert to fraction form
    389.73/585.51 = 335.06/x
  3. Step 3: Cross multiply
    389.73x = 585.51 × 335.06
  4. Step 4: Simplify right side
    389.73x = 196,180.88
  5. Step 5: Solve for x
    x = 196,180.88/389.73
  6. Step 6: Final answer
    x = 503.37

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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.