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Finding the Fourth Proportional to 333.16, 458.34 and 255.40

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Solution

The fourth proportional to 333.16, 458.34 and 255.40 is: 351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.16 : 458.34 = 255.40 : x
  2. Step 2: Convert to fraction form
    333.16/458.34 = 255.40/x
  3. Step 3: Cross multiply
    333.16x = 458.34 × 255.40
  4. Step 4: Simplify right side
    333.16x = 117,060.04
  5. Step 5: Solve for x
    x = 117,060.04/333.16
  6. Step 6: Final answer
    x = 351.36

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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.