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Finding the Fourth Proportional to 328.97, 493.31 and 174.86

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Solution

The fourth proportional to 328.97, 493.31 and 174.86 is: 262.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.97 : 493.31 = 174.86 : x
  2. Step 2: Convert to fraction form
    328.97/493.31 = 174.86/x
  3. Step 3: Cross multiply
    328.97x = 493.31 × 174.86
  4. Step 4: Simplify right side
    328.97x = 86,259.02
  5. Step 5: Solve for x
    x = 86,259.02/328.97
  6. Step 6: Final answer
    x = 262.21

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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.