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Finding the Fourth Proportional to 415.51, 573.08 and 249.69

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Solution

The fourth proportional to 415.51, 573.08 and 249.69 is: 344.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.51 : 573.08 = 249.69 : x
  2. Step 2: Convert to fraction form
    415.51/573.08 = 249.69/x
  3. Step 3: Cross multiply
    415.51x = 573.08 × 249.69
  4. Step 4: Simplify right side
    415.51x = 143,091.10
  5. Step 5: Solve for x
    x = 143,091.10/415.51
  6. Step 6: Final answer
    x = 344.38

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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.