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Finding the Fourth Proportional to 473.27, 708.39 and 385.85

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Solution

The fourth proportional to 473.27, 708.39 and 385.85 is: 577.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.27 : 708.39 = 385.85 : x
  2. Step 2: Convert to fraction form
    473.27/708.39 = 385.85/x
  3. Step 3: Cross multiply
    473.27x = 708.39 × 385.85
  4. Step 4: Simplify right side
    473.27x = 273,328.74
  5. Step 5: Solve for x
    x = 273,328.74/473.27
  6. Step 6: Final answer
    x = 577.54

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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.