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Finding the Fourth Proportional to 365.12, 504 and 330.56

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Solution

The fourth proportional to 365.12, 504 and 330.56 is: 456.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.12 : 504 = 330.56 : x
  2. Step 2: Convert to fraction form
    365.12/504 = 330.56/x
  3. Step 3: Cross multiply
    365.12x = 504 × 330.56
  4. Step 4: Simplify right side
    365.12x = 166,602.24
  5. Step 5: Solve for x
    x = 166,602.24/365.12
  6. Step 6: Final answer
    x = 456.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.