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Finding the Fourth Proportional to 473.63, 709.91 and 254.09

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Solution

The fourth proportional to 473.63, 709.91 and 254.09 is: 380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.63 : 709.91 = 254.09 : x
  2. Step 2: Convert to fraction form
    473.63/709.91 = 254.09/x
  3. Step 3: Cross multiply
    473.63x = 709.91 × 254.09
  4. Step 4: Simplify right side
    473.63x = 180,379.76
  5. Step 5: Solve for x
    x = 180,379.76/473.63
  6. Step 6: Final answer
    x = 380.85

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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.