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Finding the Fourth Proportional to 299.55, 447.09 and 292.26

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Solution

The fourth proportional to 299.55, 447.09 and 292.26 is: 436.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.55 : 447.09 = 292.26 : x
  2. Step 2: Convert to fraction form
    299.55/447.09 = 292.26/x
  3. Step 3: Cross multiply
    299.55x = 447.09 × 292.26
  4. Step 4: Simplify right side
    299.55x = 130,666.52
  5. Step 5: Solve for x
    x = 130,666.52/299.55
  6. Step 6: Final answer
    x = 436.21

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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.