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Finding the Fourth Proportional to 303.57, 454.79 and 255.14

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Solution

The fourth proportional to 303.57, 454.79 and 255.14 is: 382.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.57 : 454.79 = 255.14 : x
  2. Step 2: Convert to fraction form
    303.57/454.79 = 255.14/x
  3. Step 3: Cross multiply
    303.57x = 454.79 × 255.14
  4. Step 4: Simplify right side
    303.57x = 116,033.48
  5. Step 5: Solve for x
    x = 116,033.48/303.57
  6. Step 6: Final answer
    x = 382.23

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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.