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Finding the Fourth Proportional to 445.75, 665.92 and 372.85

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Solution

The fourth proportional to 445.75, 665.92 and 372.85 is: 557.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.75 : 665.92 = 372.85 : x
  2. Step 2: Convert to fraction form
    445.75/665.92 = 372.85/x
  3. Step 3: Cross multiply
    445.75x = 665.92 × 372.85
  4. Step 4: Simplify right side
    445.75x = 248,288.27
  5. Step 5: Solve for x
    x = 248,288.27/445.75
  6. Step 6: Final answer
    x = 557.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.