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Finding the Fourth Proportional to 662.99, 915.19 and 441.86

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Solution

The fourth proportional to 662.99, 915.19 and 441.86 is: 609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.99 : 915.19 = 441.86 : x
  2. Step 2: Convert to fraction form
    662.99/915.19 = 441.86/x
  3. Step 3: Cross multiply
    662.99x = 915.19 × 441.86
  4. Step 4: Simplify right side
    662.99x = 404,387.27
  5. Step 5: Solve for x
    x = 404,387.27/662.99
  6. Step 6: Final answer
    x = 609.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.