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Finding the Fourth Proportional to 331.53, 457.16 and 294.68

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Solution

The fourth proportional to 331.53, 457.16 and 294.68 is: 406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.53 : 457.16 = 294.68 : x
  2. Step 2: Convert to fraction form
    331.53/457.16 = 294.68/x
  3. Step 3: Cross multiply
    331.53x = 457.16 × 294.68
  4. Step 4: Simplify right side
    331.53x = 134,712.15
  5. Step 5: Solve for x
    x = 134,712.15/331.53
  6. Step 6: Final answer
    x = 406.33

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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.