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Finding the Fourth Proportional to 328.20, 452.93 and 217.59

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Solution

The fourth proportional to 328.20, 452.93 and 217.59 is: 300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.20 : 452.93 = 217.59 : x
  2. Step 2: Convert to fraction form
    328.20/452.93 = 217.59/x
  3. Step 3: Cross multiply
    328.20x = 452.93 × 217.59
  4. Step 4: Simplify right side
    328.20x = 98,554.47
  5. Step 5: Solve for x
    x = 98,554.47/328.20
  6. Step 6: Final answer
    x = 300.29

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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.