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Finding the Fourth Proportional to 328.82, 493.73 and 314.21

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Solution

The fourth proportional to 328.82, 493.73 and 314.21 is: 471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.82 : 493.73 = 314.21 : x
  2. Step 2: Convert to fraction form
    328.82/493.73 = 314.21/x
  3. Step 3: Cross multiply
    328.82x = 493.73 × 314.21
  4. Step 4: Simplify right side
    328.82x = 155,134.74
  5. Step 5: Solve for x
    x = 155,134.74/328.82
  6. Step 6: Final answer
    x = 471.80

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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.