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Finding the Fourth Proportional to 593.40, 818.91 and 331.41

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Solution

The fourth proportional to 593.40, 818.91 and 331.41 is: 457.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.40 : 818.91 = 331.41 : x
  2. Step 2: Convert to fraction form
    593.40/818.91 = 331.41/x
  3. Step 3: Cross multiply
    593.40x = 818.91 × 331.41
  4. Step 4: Simplify right side
    593.40x = 271,394.96
  5. Step 5: Solve for x
    x = 271,394.96/593.40
  6. Step 6: Final answer
    x = 457.36

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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.