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Finding the Fourth Proportional to 364.69, 503.78 and 331.89

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Solution

The fourth proportional to 364.69, 503.78 and 331.89 is: 458.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.69 : 503.78 = 331.89 : x
  2. Step 2: Convert to fraction form
    364.69/503.78 = 331.89/x
  3. Step 3: Cross multiply
    364.69x = 503.78 × 331.89
  4. Step 4: Simplify right side
    364.69x = 167,199.54
  5. Step 5: Solve for x
    x = 167,199.54/364.69
  6. Step 6: Final answer
    x = 458.47

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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.