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Finding the Fourth Proportional to 328.02, 453.09 and 273.45

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Solution

The fourth proportional to 328.02, 453.09 and 273.45 is: 377.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.02 : 453.09 = 273.45 : x
  2. Step 2: Convert to fraction form
    328.02/453.09 = 273.45/x
  3. Step 3: Cross multiply
    328.02x = 453.09 × 273.45
  4. Step 4: Simplify right side
    328.02x = 123,897.46
  5. Step 5: Solve for x
    x = 123,897.46/328.02
  6. Step 6: Final answer
    x = 377.71

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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.