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Finding the Fourth Proportional to 303.75, 455.49 and 173.61

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Solution

The fourth proportional to 303.75, 455.49 and 173.61 is: 260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.75 : 455.49 = 173.61 : x
  2. Step 2: Convert to fraction form
    303.75/455.49 = 173.61/x
  3. Step 3: Cross multiply
    303.75x = 455.49 × 173.61
  4. Step 4: Simplify right side
    303.75x = 79,077.62
  5. Step 5: Solve for x
    x = 79,077.62/303.75
  6. Step 6: Final answer
    x = 260.34

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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.