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Finding the Fourth Proportional to 529.09, 729.82 and 330.03

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Solution

The fourth proportional to 529.09, 729.82 and 330.03 is: 455.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.09 : 729.82 = 330.03 : x
  2. Step 2: Convert to fraction form
    529.09/729.82 = 330.03/x
  3. Step 3: Cross multiply
    529.09x = 729.82 × 330.03
  4. Step 4: Simplify right side
    529.09x = 240,858.85
  5. Step 5: Solve for x
    x = 240,858.85/529.09
  6. Step 6: Final answer
    x = 455.23

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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.